Eh the two people I watch a bit of (Supa and Ven) both had some pretty massive reservations about cata. They still have some of the same reservations about mop.
One big dif between cata and mop though that’s a pro for mop is PvP gear is better. Legendaries giving you massive advantages are not a thing.
So it’ll for sure be better than cata. Still ain’t going to last that long though. No new content = dead game.