Artifacts were nice the but constant AP farming was annoying.
Azerite armor might of had nice effects but it was annoying to make them an armor slot, should of just made it like the essences and even then they didn't totallly change at least to me how I played. Corruption.......not a fan but thematically it made sense. Conduits didn't really change much except one conduit I really loved but it wasn't really something that changed how I play. I'm fine with borrowed power going away but......
I dunno seems too rosy of a thought on borrowed power even though I didn't hate it.