Hi!
Oh come on, you're saying that it was hard to make logical mechanics? Couldn't you have made Mei cross alone and leave the party behind, then, I don't know, find a rope and use it to help the party climb the obstacle, would that have really been hard to make?
Also, I understand that game jams impose short schedules but once the game jam is over and you become free of time pressure, why don't you develop and polish your creation further to find out what you could achieve with more time to dedicate to it?
By the way, when Gion uses his superheating perk, he says "Time to hit things up!" instead of "Time to heat things up!"... ;-3