What would you add to this group?

[bubur]

also, cant see any good reason to have two tanks. your monk can offtank, even the rogue can to a lesser degree. both can grab mobs off your casters long enough for a mez to land, or tank to taunt. both can hit the agro release button if they have to also

and again, mage pet can serve a similar purpose. a perfect disposable offtank with taunt ta-boot