If you like Japanese culture, there's a lot of reference of it in the latest expansion.

Storywise it has its ups and downs. Gameplay wise - it's fun but content wise it may get dry at times. Old content might get obsolete quickly (Diadem)
Community wise, their mostly nice gamers though a minority are still kinda mean.
PVP wise - I don't have any comments since i don't really focus on that but I heard it hasn't been up to par.
Forum wise - it's kinda active, though Reddit seems more active.