I think the #1 thing that they could do would be allow for a preformed multi party group to enter the whole zone together via Party Finder, even if it's not actually added via Duty Finder for auto matching. Taking out the hunt and peck aspect of getting everyone into the same instance would already be a huge quality of life improvement, and if a large group has to spawn a new instance to accommodate them, then so be it, because that's what the premade groups are already doing, anyway.