I know it's possible to make something more substantial in bitsy, but it seems like no one else is interested in doing so. I wasn't exaggerating when I said I'd played 10 second long bitsy games. It's a shame, because using a restricted engine (like using a restricted color palette) can be a really fun challenge. In fact, being so restricted means you can stretch the engine to its fullest, because there's so little to learn and it's easy to learn it all. After that it's all about using the tools creatively. I'm speaking from a perspective of making games with RPG Maker without using any scripting. I realize it's not the same as using bitsy, but I understand it's still a restrictive environment. You can end up with some interesting stuff!
Anyway, if you make more bitsy games, then I'd love to see them!