Tagging with another character

I wish we could tag with another character.

I'm mostly a PVP player. But I also love to create new characters and level them in early zones. When I want to play PVP, I need to log on that character and just mess around until I find a game.

I would be soooo nice to be able to go to the matchmaking menu, and be able to chose with which character you want to tag in. So you can play another character in the meantime.