Thank you for the suggestions! Even though everything has been quite for a while, it is still considered in development at this time.

Reply to game suggestions:

1. Of course, the roster so far is small but is planned to have a myriad of characters with different genders. Though I would have to keep in mind when planning character unlocks such that player's can go after a specific gender only. It be fun to have a "sex change" potion as a possible mechanic (gender specific mechanic but the level gives you the opposite gender of it). Though a gender option could be another ambitious mechanic for the game but I'll set these as later goal posts.
2. Yes, more characters and levels would be great. There is already an underline work for character creation but requires a lot of manual work from the player's side. I hope to make it slightly easier for players to make their characters, while I do hope to add a level creation system so players can play around with the game mechanics and possible make some interesting challenges that I haven't though up of. But currently I am finding that objects are already conflicting with each other so it'll be awhile before the level creator. Hopefully no too long.
3. Muscle growth is pinned as a possible mechanic as you could have one character fattened at a feeding machine to the point of immobility with a second character needing to become strong in order to lift the heavy character to a button that needs high weight to trigger, or use the first character as a sort of "anvil" against a group of test subjects instructed to attack/impede you.
   As for the gender specific inflation mechanic, as of current I don't want to make it too reseque so the lactation/cum won't be added at this time. Although I'd sort of had an idea for a "catch-all" inflation type called Goo with a possible color attribute (making it unique to the other inflation types), with hopeful plans to give creators enough free agency to make these possible lewd mechanics and antics doable.
4. I'm still on the fence about possibly making this a sold game, but I probably will keep it as a freeware most likely. Closest thing to this that I have thought of was doing a sort of Community Select's DLC which bundles top picked community characters in a single DLC file and making it an official download.
5. Vore is on the roadmap as a mechanic (Big Bad Wolf has this capability with the icon included in game, but is yet to be implemented). I'll have to add your suggestions about it to my idea list since I only scribbled "invisibility" as the closest thing, but thinking more about it it could make for some fun puzzles. Such as a camera will only let the door open for a specific character so they would have to vore the other to sneak past it, or even sillier have some kind of pregnancy scanner that will make a machine operate only if it detects a "pregnant" character. It will likely be soft vore, but a hard vore could be added as a "difficulty" if a player chooses to, idk myself.
   As previously stated before, I will likely not include reseque elements (Unbirth) into the core game, but will be pleased as peaches to give creators the tools to do so. I might make an example to show creators how to change certain properties such as making a "water gun" attack come from the hands rather than the mouth and showing how to change it into something else like fire, electricity, or goo. Since characters will likely be all sorts of shapes and sizes, and capabilities. ;3

Reply to forum suggestion:
The forums already have a section for Custom Characters located in the Workshop section. It has a section for Levels and Translations too, so the game can be translated into other languages and once level creation is supported it will be readily available.