I was thinking it wouldn't be too hard to make other double flip variations possible (like do tre double flip, just by holding the stick in the same flicking direction for a second after the initial trick, like normal double flips), though watching inward 360 double heels all the time would be kinda shitty.
Maybe giving front and back foot impossibles the slots inward 360 heel and 360 hardflips currently occupy would be an improvement as those are both godawful tricks. Also I think switch no-comply's should be possible, as well as no comply shuvits, 360 shuvits, and flip variations such as the ron whaley no comply big heel's.
Also I think that if you've chosen a stance, you should have to stick with it (or at least make that an option). it would be rad to actually be able to push switch in the middle of a line and still be able to do switch tricks with the nose.