Thank you for playing, I'm glad it turned out as creative as it did!
(Sorry in advance for the wall of text)
Everyone on the team had a different dream game, and we kind of mashed them all together (also cut the scope a bit) and made a small version of all of our ideas combined!
Totally agree on the Mubbin limit though! Having played the game a lot while implementing it, I also felt like I really wanted to keep more Mubbins around than I was allowed to, but for difficulty/balance purposes I think it has to be three.
We're adding a few post-submission QoL improvements for now (Some last night, some more in a day here) but I don't know if we'll do a more full-fledged version. I can't speak for the rest of my team, but I personally try to avoid doing significant post-jam work on stuff because I want the game to stay representative of what I was able to do in the timeframe of the jam at that point in time. This is my first game-jam with a team though, and if they want to improve it further, I would probably oblige since they may want to showcase their development differently.
In terms of what could be in a "full-fledged" version: There are a few systems that we didn't have time to implement, and in terms of core-gameplay, the end-day score screen is the most in need of polish. If it showed more details to the player about the score, and built up the score reveal with more SFX and dramatic effects, than this game would almost certainly shine a lot more. Also, just more SFX in general when the player is doing things, and better ways of showing information to the player (instead of abusing tooltips) would be on the docket for a more-complete version of it.
P.S. I haven't played your game yet, but it looks super polished!
I commented with my team about how your game looks like it might be similar to what we were making and so we'll have to play it here as soon as we're done with our QoL stuff!