Not sure if someone has mentioned yet, but why not at least make Behemoth and Odin spawn in their OWN zone rather than MD and Coerthas? At least then the regular people who are not there for FATE will not be interrupted by intense lag and zone restrictions. It's just silly to have unique rare fates spawn in already populated zones. It would not solve the problem of too many people rushing to fight them, but it would at least aleviate some of the stress of having harvesters, questers, and people looking for dungeon groups around.