Here are some changes my older brother is planning to do right now:
1. Make It's a Bully's map icon disappear when inactive
2. Fix stretched out and smushed ceiling textures
3. Change the color of a duplicate red notebook to yellow
4. Have a translucent black background and pause audio in the pause screen.
5. Pause non-YCTP audio when solving YCTP problems.
6. Fix the invisible credits entries.
7. Change the text shown on the free run sign pole
8. Simply make the player unable to move during the elevator sequence instead of a player holder
9. Rework how the player speed multiplier works to fix bugs like eating a Chewsi Speedy Bar, then getting touched by 0th Prize before the bar effect ends, without cancelling it, which leads to the player prematurely being able to move.
10. Nerf the portable tape player (currently a knockoff of Alarm Clock that activates much earlier).
11. More refactoring