Not really..."most logical" is just the term I used to draw you in, it should read "What I think should be the next" but anyhow The first new class of course was the Death Knight a Plate class, and then a Monk; Leather. I feel like Shadow Hunter could be the next most viable class. I hear a lot of people screaming for Demon hunters but to my knowledge that would be a leather class, most certainly not cloth. The Shadow Hunter would be a Mail wearing ranged physical class (like a normal Hunter but sans a controllable pet) but would use ranged weapons like glaives shuriken and the like. I don't feel it would be viable to give them a tank spec, so most likely a ranged physical, a healing class, and maybe perhaps a second healing spec? That would be only the second class to have two healing trees. You got a lot to work with...totems, lots of lore, big bad voodoo (omg yes please), and much more. I had a lot more ideas but my posts rarely get read.