I've played a Paladin for most of my time playing WoW (Shaman, Mage, and Warlock have all been sprinkled in) and I'm really thinking of going Rogue for Legion. I like the overall theme of Outlaw and with RTB apparently being changed a bit, I think that'll be the case.
Of course, I just found out that the Assassination artifacts are the daggers Garona used to kill Llane so now I have to look into how Assassination plays, lol.