This is where I stand on all classes.
I'm open to all class concepts being playable in WoW on the basis that Blizzard has a formula set, and they're designing classes like madlibs.
They might start with something absolutely new and fresh, but a couple expansions in everything gets homogenized to the point where all specs are just derivatives of each other. That's the only way they see balancing all specs in this game.
So in the end it doesn't matter if it's a Necromancer or a Tinker or a Dark Ranger. It's all gonna fit within the standard we expect to see classes today. This isn't Heroes of the Storm we're talking about where they can pull out a completely radical concept like Deathwing as a playable Hero.