What if you could switch? Trade in a level 60 of one faction for an equivalent of another? Would you do it, and why?
I'm not sure that I would; I personally enjoy seeing new scenery from both sides, levelling up through both factions. I know some players who role-play would love to, for example, turn a human into one of the Forsaken, but somehow I don't think it's a game feature that's ever going to happen.