Ogres would become the Dwarves of the Horde. With the obvious joke about them not really differing all that much when it came to the sexes.
Ogres do already have quite a few classes covered when you think about it.
We have mages, warriors, warlocks, hell even brewmasters! (The guys in Blade's Edge).
They would easily fit in with regards to a BL expansion I guess. I'm more curious about what the Alliance would get while the lovely Horde folk get these guys ^_^