Thanks for the feedback. I'm curious what you mean by the texture stretching? That sounds like a bug. Everything should scale uniformly as the player changes size. Would it be possible to post a screenshot of what you're seeing?
I agree that the floaty jumps are a bit odd. They actually emerged out of a rounding error bug in the way the physics scales with the player but I kind of liked the princess peach feel of it so I kept it. If I work on this post-jam I'll probably explore how the physics changes with scale and try to make the player more stompy and cumbersome when they're huge and more light and drifty when they're small, and work that into the level design somehow. For instance, I wanted to have the player able to smash through terrain by walking into it when they're very large but I ran out of time to make that work.