For my mixed group (warrior tank and various caster DPS), I pushed a movement key for my alts so they would break follow and my melee would go up and smash faces. Your DPS is parked about 15-20 yards away and don't usually have to worry about facing issues. It also helps with mobs that AOE fear. For melee that you want to make face the mobs, the new keybind "Interact with Target" helps a crap ton. Get a mob on your main, push your assist macro (so now your alts have your main's target) and then push the keybind, and now your alts will walk up and smash faces also (even turning around). Think of it like an attack key or your alts right clicking on the mob.
Hope that helps and good luck.