Now hear me out folks.
This post is supposed to make no sense and its not a suggestion cause I know it'll never happen.
So just hear me out.
They should make an outdoor raid boss that's completely undefeatable unless there's enough people there to make the server crash or something. Hugely inflated health pool, hits like a truck so that the tank can only survive for like 5 minutes if there's 15 heals spamming heals at him non-stop. Stuff like that. It'd of course be for shits and giggles and will lead to a lot of horde and alliance battles. Outdoor pvp in the boss's zone might become into an "OH LOOK, HORDE! LETS LURE HIM TO BOSS AND VANISH!"
Could make for some super fun times and stuff. It'll have no true value. Maybe if you SOMEHOW AFTER A MILLION YEARS manage to kill him, you get a few boe epic pieces that aren't all that amazing.
I've heard there's some boss already like this. Some whale shark or something. But I want a boss that's SUPPOSED to be made like that and isn't something that just hasn't been balanced yet or is enormously bugged.