@ DP: Looks like the Vanguard, for now, makes the better tank then. No problem with aggro drawing DPS players either, I've played with both Jeff and Mav and they're rolling DPS (melee and ranged) and I can still take all the aggro with the Vanguard despite their attacks.
There was this one time in a flashpoint where we were taking on a boss who called in for reinforcements every so often. I managed to keep him focused on me as well as have the reinforcements chase me around the area as I kited them... I was pretty proud of the moment XD