Guild wars 2 is pretty amazing the only thing it is truly missing is proper organized group content like dungeons raids and proper roles, you can specialize into healing and defensive buffs so pretty much anybody can be a support role with any class. I've taken it up for a few months at a time each expansion that came out but unless they're willing to actually hunker down and start making roles that feel like proper RPG roles just going to linger is a non-competitive MMO.