I would advise to wait until 9.0, the next expansion at least, or like the end of BfA before returning to the game, as of right now everything Is pointless to grind, you'd have to grind lots of reps and quests that are also time gated because Blizz has a boner for those lately. Just wait before you come back on, as of right now the game Is pretty bad and I doubt It'll get better until the next expansion personally, by how much that depends on Blizzard and If they wanna listen to player feedback.
I've dabbled into Final Fantasy 14 and doing some research on that, and trust me, Square Enix despite some of their own faults and mistakes In the past, took that MMO that launched In 2010, shut It down in 2012 In the most epic way and brought the game back years later WITH player feedback In mind and changed It.
And you know what, If Blizzard wants to do another WoD content draught style thing, let them. Just do It Blizzard, as long as you change your shiz up and listen to player feedback. Because last time you did a content draught you gave us a piece of grindy shiz called Legion, for the last three expansions It's been nothing but the worst expansions this game has ever seen.