My suggestion for the lab escape. While it's nice and all to have the gaps randomly located I strongly suggest putting a cap in place to prevent one RNG result being too far from the previous result. The mode is already highly unforgiving on mistakes and a mistake a player might unwittingly make is trying to preemptively move up or down while in middle of a while gap causing them to bang against the insides of the wall and slow down. There's no warning against that mistake so if a player isn't observant they can screw themselves over without even realizing.