I've got a triple team of UD Mages in the high teens, but I am considering a quad team of 3 S Priests with a Paladin tank. My buddy is doing a Paladin ATM, but he's looking at bringing in two Mages.

I just want to hurry up and get into SM.

Why would they want to try so hard to conceal the fact they control multiple toons? If I was a raid leader, I'd welcome multiple DPS focus-firing a target or multiple healers focus-healing a tank. That's the ultimate in synchronicity.