You know, instead of throwing a completely random race like the Draenei at the Alliance in tBC it would have made perfect sense for the High Elves to be the new race for "both" factions having them start out in a cavern of time Instance where at the end they could end up sticking to the Alliance before they get kicked to the curb or play til the point they do end up getting shafted and going Blood Elf to eventually join the Horde.
It COULD be part of the Outland overhaul/touch up.