Reading over this post on Scrolls of Lore about the Demon Hunter got me wondering again about these elements' making it into the game. Several posters mentioned that quite a few demon hunter-themed abilities have made their way into the warlock toolkit, making a separate demon hunter class redundant and unlikely. It's a fair point, and it's mirrored in other places.
Mages in WoW make a specific archmage class unlikely. Paladins have pretty much absorbed the knight unit into themselves. Warriors are getting abilities reminiscent of the Mountain King and Tauren Chieftain heroes. At this point in the game's existence, with 11 classes come Mists of Pandaria, are we likely to see any more introduced? Is it better that the trappings of the RTS make it into the MMO at all, or do they have to come packaged with the heroes and units that made us love them?