They need to expand the target system to include "subtargets", and have a group be able to claim multiple mobs. As it stands, they gain nothing if they take on add and have to deal with them in certain ways, likely immediately killing it. If multiple groups of targets are involved, like in behest, subtargets can also be toggled so that the group immediately locks on the next mob selected(look at, not attack). Have that role be part of a party leader, or a role they can designate, like the quartermaster role in ffxi.