Glad you liked the game!
The jump-split-fuse-jump mechanic is intentional and it is the solution for the elevator level (you can find the instructions for it in a hidden area on the top floor of the elevator level).
I plan on adding more advanced camera controller in the post-jam version which would have a 'deadzone' meaning the camera will keep the player within certain bounds at all times and smoothly follow it when it is in the 'safezone' ... This should hopefully solve the issue with the camera.
I am planning on collabing after the jam for the music as I am not so good at making music. We will have multiple longer music tracks and various SFX in the post-jam version :)
I am planning to work on the game after the ratings are over but it will be only the bug fixes, new music/sfx and maybe a few more levels.
Thanks for the feedback :D