>>25047933TMs are kept as they are, but other moves can be used instead (eg. any slash-like move can remove trees, any fighting type move can smash rocks...)
Scaled gyms, gyms will have a level close to your pokemon, evolving accordingly, gyms no longer have to be followed on the same order (but keep the traded pokemon not obeying if less than X badges)
Remove nip pandering
Remove temporary events (instead release them from X day onwards, if needed)
Remove shitty forced "save the world" plot
Remove shitty route limitations, like how in B2W2 there were a bunch of retards just blocking routes until defeating the E4
Punish bad choices instead of just denying them, want to explore that endgame cave with your level-5 shitmons, go for it :^)