Imo the only reason MNK isn't needed in todays raid is cus we don't need PLD. If everyone needed a PLD in their group for MT, you'd bet that the 2nd tank they chose would most likely be WAR cus WAR is just OP. And if you have PLD and WAR, you might be like some teams back in Final Coil that NEEDED Dragon Kick debuff to even live through the mechanics.

Monk has it's utility. It has Manta and a few nifty surviving abilities; Second Wind, Bloodbath, Featherfoot and you can even toss in Forsight but most use fracture. And while the need to Dragonkick is lessened cus of DRK, that won't be the case if you go PLD/WAR like some statics, including the one I'm in.

Monk used to be the best pre-3.0, hell some teams even went double monk. Now it's DRG and NIN's time to shine and nothings wrong with that. But you won't see me changing my job just cus it will be a small boost in raid dps cus that's not why me and my friends raid. I enjoy Monk and I'll keep enjoying it with my friends.