Gear has progressed so much since WKR was added that one player can kill a Wild keeper Reieve in 5-10 minutes and it's dead for 3 hours, and this means new/casual players that need the clears can't get the monsters to kill them. They are always dead, and/or on lockdown.

Lower the respawn time for WKR, increase the HP pool, add a timer on buying a new Key items (so the same person can't kill it over and over) and potentially reduce the resale (balyd) of the items it drops.