Hello again, I've finally updated the final version for the jam if you're interested in comparing if movement is still as clunky.
I was thinking about your points about the visuals and I tried at least resizing and refitting the sprites into the scene a little, since I had no plans on making the backgrounds more detailed in remaining time. Now there are 2 main objects to interact with so I also added a little animation to make it clearer when they're activated.
Wish you a nice day and I really hope I cleared out your doubts about the art :)