Not because it's bad, but rather because of WoW fatigue, lack of solo leveling options, and the game continuing to be more of the same. I would say if they could let players level 50+ use Torghast as a viable alt solo leveling mode, that alone could bring me back to the game in full throttle.
Questing being the only solo mode possible atm gets quickly boring. I have an alt army and I have absolutely zero motivation atm to touch them.