Whichever most resembles your previous favorite. I vote GW2 for endgame-content and familiar MMORPG combat-system.
Just don't play Minecraft, that game has too much attention already. I'm fine with the two other choices. Path of Exile if you like complex character build systems and Guild Wars 2 if you like it a bit simpler and easier to access.
None of them. Final Fantasy XIV: A Realm Reborn.
Only plays Magic DPS Classes, Healers and Machinist/Engineers.
Playing MMO: FFXIV (Balmung)
Waiting On: FFXV, KH3, Tree of Savior, RE:FFVII · Saving For: New Computer