I don't think that there's anything wrong with the mechanics of the game. Having your speed, jump timing, and size to manage all at once was a nice challenge, only slightly dampened by having to control all of them the same way. I should also mention that I think it fit the theme of the jam very well. Whereas with other projects I was struggling to understand how exactly their mechanics fit "built to scale," I think that this was a pretty simple, easy to understand interpretation of the theme, without sacrificing gameplay.