Thank you very much for the well wishes!
Yeah I think the idea of having unique marbles are really cool. There are all kinds of abilities/effects you can have like bounciness, unmoving wall, or maybe a ticking time bomb that explode after a number of hits XD? Haha, just some off the top of my head. These kinds of games definitely have a lot of room to experiment with, but you don’t always get all the time you need for implementation in a jam. I think you could find a lot of inspirations from the modern block breaker genre (games like Ball x Pit).
I think having slightly different controls based on abilities/characteristics of each marble is also not a bad idea, as long as the core control scheme is the same. I wouldn’t make one marble controlled by the keyboard and the other one by pressing the Spacebar for example. But I think an even better solution may be to be additive, rather than subtractive. Discovering new things to play with rather than having new restrictions always feel more fun for players (although some players definitely enjoy a challenge as well).
What I meant by perspective is that in this screenshot for example, you can see the top and the bottom of the lamp post and the shading follow horizontal lines, but the rest of the ground are diagonal lines, so to me it looks off. But maybe other players don’t mind it as much (seeing it’s a jam game and all). I may sound nitpicky sometimes haha, but often I just want to point things out as stuffs that could be improved post-jam, not necessarily things I take points off for the jam rating.