Personally, I think that the game is great. I also like the concept of a movement-oriented but I think that you shouldn't just add movement-related abilities, but in addition to that movement-related terrain, for example, jump pads, rooms without gravity, or reversed gravity.
Yeah, that also came to my mind shortly after posting it so my only hope is that once everything is changed (like he mentioned in the note in the pause screen) he will release legacy versions for the same purpose.
Is there any chance you are going to release the source code of earlier versions (like v1 or v2, maybe v3 as the game progresses) to create mods or just to have fun?