I'm not sure where else to put this, but there really needs to be a challenging Treasure Map. Something where mobs like a primal, behemoth, odin, or even a new strong mob is used, depending on the zone. It's a way to give end game players the ability to do something challenging, as an 8man group.

Think Notorious Monsters from ffxi, only with it's own little twist. In addition the rewards could be high end gear/myth (i85 gear), simply making the mobs extremely hard, and if it's a wipe, the map is lost.