This is an awesome game mechanic! Swapping in and out of bodies to get different abilities is really fun. More effects and post processing would really sell the feel of the game! Add that impact or "juice", you know?
(Also, about the entry, it may record the submission as soon as you start creating the itch page, or maybe when you actually add a game file--I am not sure which. Mine says it was submitted 1 hour before the jam, which I remember sounding wrong for when I finally saved the page.)