get rid of set items being BiS
diablo 3 was imo ruined by every class getting 3-4 sets and the sets being BiS.
they're boring and wayy too strong, a few sets are okay, namely the ones that only require 2-3 items.
They ruined it even more by giving everyone a free set by simply getting to lvl 70 and playing for a few hours meaning you jump from a low difficulty to easily farming high difficulties and getting soo many legendaries.
Sets aren't boring, they're nice and fun, but they're boring in the way that they killed any sort of playing around with trying out different legendary combinations etc.