People raid because they like raiding. if they like raiding that much and they are in NA/EU, they're far more likely to be playing WoW not FFXIV for their raiding fix (though they may also play FFXiV for other reasons).

It doesn't matter how many incentives you add to content, if a player doesn't like that content they won't do it. All you end up doing is giving more rewards to the players that would have been doing the content regardless. If you try to force the matter by making raiding (or whatever content the player finds undesirable) essential to character progression, they'll just find another game to play.

Stop worrying about raid completion rates among players. Enjoy the parts of the game you enjoy and let others do the things they enjoy.