Yeah, definitely something to be said for just throwing a bunch ideas against the wall and seeing what sticks for a gamejam, I totally get that, so maybe it's for the best, especially if you plan to keep working on it through SMVM. Good luck!
For specific problems: I remember the part in the Quick Man laser area where you can either go over the top to get a health upgrade, or take a lower path to get to the top, it felt really unreliable to get into the top corridor to begin with, like my toe kept getting stuck on the edge. I think all the other times I got stuck in terrain had something to do with me going back a scene or doing something with moving platforms or the surf powerup. The room with the moving platforms that you have to hop between had me getting stuck a few times. Hope that helps!