I do not get this poll. You do not need a "team" to do treasure maps at all. T-Hunter plus disco tamer is all I use. I have my disco tamer sit back, T-Hunter digs up chest, invis's, runs out of harms way, re-invis's. I then proceed to lure monsters to my greater dragon one at a time if it's ancient wyrms or greater dragons. Hell, sometimes I'll tank 2-3 of them at a time.
Moral? Rephrase your poll. Maybe ask what is more fun to people and add TWO to the list. Because you do not need a team to do level 6's.
Just my .02.