in my experience so far with my mixed team (only at lvl 75 - war/lock/hunt/boom/tree) they could be complicated in terms of what you're trying to accomplish (aoe,cc,heal). generally however, that's not the case. isboxer dumbed down my heal and aoe management. i never really cc. anyway, i feel more comfortable with my mixed team than my dk/pally + sham team. there are just some nice abilities/buffs and procs complimentary to the other classes allowing for bigger booms and higher dps sustenance and survivability. whether that'll change later on when theyr'e 80, who knows. my goal anyway is to ultimately create mixed teams.