The hunt solution: scaling HP (used in GW2 and WoW already...)
I'm surprised FF isn't using this...
The premise is simple: when a hunt mob is being attacked by 10 players, it has enough HP for those players to kill it in 2 minutes.
When the same mob is being attacked by 100 players, it gains enough HP that it will take those players 2 minutes to kill it.
For each additional player fighting the mob, it gains X HP (only the devs know what X should be).
That way, mobs don't melt in seconds because someone pulls early. This would be a VASTLY better way to regulate hunts, not only to prevent zergs from melting the critter, but also to ensure that a hunt mob could be handled by ~10 players (or less) on lower pop servers if need be.