Below are some of my ideas.

TLDR

1. Rebalancing the mental stamina of the idol (not much impact on the current game right now) (related to 3. Idol’s preferences too)

2. True End after the story mode (Idol’s ending) (Again, related to 3. Idol’s preference)

3. Idol’s preference on genre (music / lyrics / choreography)

Elaboration:

1.Rebalancing mental stamina

Currently the mental stamina is not impactful on the game. I suggest every activity (like releasing singles) should decrease the mental stamina on the idol. Moreover, If the idol personal preference is not match with the singles / concert, for example, A idol with preference on metal music, but the new singles are of different genre, the idol will suffer more damage on mental stamina.

In addition, 100% of mental stamina should mean 100% of the idol’s ability status, while low mental stamina will yield a percentage of the idol’s ability. (e.g., 50% stamina may cause the idol’s originally 100 dancing skills to 50 dancing skills)

This should cause the player to slow down the money-making process and force them to choose the right member regardless of the flat ability of the idol. Thus, the player could not spam singles and concert on making huge amount of money.

2. True End

After the current story mode, there game has no goal and I suggest having a true ending. 

The ending should be focus on the idol / the idols’ group. For example, I imagine a scenario when after the story, the main character is challenged by the top rival idol manager (from a particular genre of music) from the world. The player then have to, for example, choose to challenge a world class metal band. 

Numerous events could be added during this scenario, for example, the rival manager may recruit your idols, and you have to choose your faithful idol/ idols to conquer the specific genre of music. As mentioned previously, each idol should have its preference on genre, the idols with different preference may leave the group as well.

If the player beat the rival manager, which will yield a true genre-specific ending for the group / idol.

This will encourage the player too play on specific genre to see all endings, and different genre should have different event along the route too.

In addition, Aya / rival (main character) / Fujimoto should also have True ending after the story.

3. Idol Preference

As mentioned previously, each idol should have preference on particular type of music / lyrics / dance, this also add difficult to the game as the player now could not choose the idol with the highest ability, but also have to consider whether the idol match the group’s image too.

Thank you very much for your reading

It would be nice if there was an option at Romance Relationship 5 to keep her in the Group and keep going on Dating / "other" events with her at the cost of triggering a scandal.

or maybe just the ability to still interact with her after marriage ...

I just finished a Romance Rout and the Idol was very well written, so I am a bit sad that all options at 5 would stop me from having further Romantic Interactions with her, I kind of wish I could keep interacting with her after she became my wife :v

I think more Formation for Idol groups would also be nice,
Trio Formations, Duo Formations,  Quartets, and 5-Star Groups ...
The Pyramid is nice and all, but I think it could be fun to have more and smaller options!
Maybe as DLC?

1 I would like to be able to sell album CDs as well as single CDs.

2 Staff members don't level up fast enough and can't be promoted before clearing the game. In the latter half of the game, I'd like to see the levels rise a little faster.

3 I want to be able to modify the interior of the game easily with mods, like in RIMWORLD.

4 I'd like to see a tool that makes it easy to make custom mods for characters. It's too much work to position the face, hairstyle and accessories.

5 I'm waiting for the DLC!

Translated with www.DeepL.com/Translator (free version)

I would like to be able to use the bangs and back hair folders in hairstyle. The back hair should be hidden behind the body.

It is difficult to add long hair and body.

Having played a frankly embarrassing amount of this game, I definitely have a few ideas for improvements or changes to be added in the future, they're really just ideas that I thought might be fun though. 

-Different sprites and appearances for different age groups. It definitely feels a little weird having a girl who's 28 and has a sprite who looks like she's 11, and it would mean I wouldn't have to check ages for each and every single one of the idols as often as I do now.  It would also be nice to have the clothing available change depending on the policy you choose for their clothes (pants if you choose pants, longer skirts, ect) 

-In the same vein, some form of awareness for the age of the girls would be nice, as you can have 12 year old girls being suggested for gravure photoshoots, and, in at least one dialog event, you can flirt with them. Having the flirtatious options changed or unavailable would be really nice, since as the game stands I just kind of pick the blandest options to avoid accidentally flirting with any kids. T-T

-Reputation and management styles! A sort of mechanic of reputation where depending on your choices, either you or the company gain certain types of reputations (salacious, rude, exploitative, laid back, supportive, ect) which would give you different buffs and effects! For example, if the company gains a salacious reputation, the idols you get in recruitment will be older and have more points towards the sexy stat, and you may even get less idols in the recruitment process. And then for you personally it could effect how the girls react to you, like if you have a good reputation with them you will gain more influence and friendship faster, and if you have a reputation for hitting on idols you may gain it slower. As for management styles, I thought an added policy option might be nice where you can choose to be stuff like 'hands on' or 'hands off' where you get different buffs and debuffs. (like maybe if you choose to be hands on you get higher quality production but it takes longer regardless of who does it, and it would be the opposite if you were hands off) 

-Other than that, I really think flavortext events with different groups having scandals and how we might react or benefit from it, or even the option to poach girls from groups that aren't doing very well (or an option for girls to ask to join your agency outside of recruitment because they decided to leave their group, and what kind of risk you would be taking if you accept them in) This isn't really a huge thing but I feel like it'd make the game feel a lot more alive and less lonely since right now we hardly see anything of any other groups, and it's even less if you don't play story mode. 

These are all things that probably won't actually be added until after release if at all, but I still figured I'd suggest it just to put it out there. Other than that I just wanted to say I absolutely adore this game so much and it brings me so much joy, so thank you. 

Bit late to the party, but loving the game at the moment - must have restarted at least 100 times by now!!

So just a few suggestions if a sequel (or update) is in the works:

1) For the Idol auditions, attendees' ranks (or at least stats) should be based on how good your company is (or doing). Why would platinum idols want to join a non-reputable upstart company when they could potentially join a more successful competitor? I say this, because sometimes you could get 3 superstars right from the start, and this greatly affects how the early game is played - I think this makes them miss out on how the developers intended players would approach the game.

2) Having the producer/manager (me) be the only person to perform certain jobs really bottle-neck the production process. Having a nobody (or even a regular manager) be in charge of writing lyrics which could potentially make or break the entire company would be in most cases absurd in real-life! Perhaps they could outsource or have permaneant staff to do the job. If an idol has enough experience singing (centering or 2nd row) with a group or they reach a certain level with their vocalist skill, maybe they could be able to submit potential lyrics to the producer - an option regardless of whether they are accepted or not.

3) Also, for mods - instead of parameters like "unique" and the "can_be_hired_again" - make it an option in the settings so players have the choice as a mixture of modders and their decisions can lead to some implementing them and others not...

Been 3 years since the intial post was made and quite a few days since the last post - hope this gets heard (visually, of course!).

Thanks for a fun game!

Is there any way to make stats for a song not extremely low if you don't include all the members from a group? Like if my group has 20 members and I'd like to have a song with 10 members, the stats for the song drop a lot due to the empty 5 spaces. 

Also will things like sub-units, albums, larger amounts of members per song, etc ever be added? Or is the game considered finished atp?

Add male idols please i would love it at the beginning of the game we could have males or we could have both and then their could be boy and girl idol groups and dating or even secret dating depending on the  policy's and have drama there but I know u are missing an entire fan base cuz I got the game told my friend's about it but they lost interest after hearing their were no Male Idols

I found an error in your coding I believe its because you used [ ] instead of { } but it was on a level 2 date a  and your in the city and it says "Though, maybe it's true that I'm more [highest_looks_attribute] than anyone you've ever gone on a date with."

Can I set birthday for new custom idols?

{

"unique": true,

"unique_id": "xxx",

"birth_day": "dd-mm-yyyy", <---------------------- like this ***

"intro_message": "yyy",

"value": "platinum"