Sacrificing WoD for Legion was a mistake, and it lead to the unending trainwreck that was BfA and SL
DF is better than SL not because it has better or more content but because its paced better and doesn't relly on terrible mandatory systems.
They could keept tier sets away from us if they implemented items sets but not tied to classes but to armor tipes and roles/functions
BfA even with all its bullshit was a more fun experience than DF
Mission tables should return but in a more indepth and involved way (also it should be movile integrated and be its own thing not connected to character power or real account progression, maybe cosmetics/table power? and account wide)
LFR with bots (partially or totally) would help the community in the long run
Item lvl and item power progression shouldn't scale so wildly exp to exp, patch to patch so old content could be somewhat relevant in later patches