I went and pre-ordered Warlords of Draenor along with everyone else a couple months ago (well, most everyone else, it seems like). I'd been thinking about which character I wanted to boost up to 90 and get maxed professions with for a while, and after a fair amount of time I took the jump and maxed out my rogue.
After the boost I played around on it a little bit. Did some timeless isle, ran some troll raids, and that was that. She just sits there now, not moving, not doing anything in particular. I've parked her next to a pet trainer. Occasionally I'll log on to her and battle the trainer whenever I remember to -- so that's a nice thing, I guess.
But you know what? For me the character became pointless, just a thing sitting there that doesn't get any attention or play time. I might as well have left her at 61, forever toiling around Mount Hyjal