I wish the party leader in the party window had the ability to just move people up and down in the list by simply clicking and dragging the persons name up or down. Very tired of joining/rejoining groups just to order a group.
Perhaps, just splitting the Party Box into detachable bars that "snap to" when near each other would suffice. And then they could be placed into custom configs by any party member...
But /agree with OP a little flexibility with the Party listing would be great.