My wish is that they would change titans model to that of the adds in extreme titan, they actually look like titan, unlike the giant crusty popcorn we currently have, as for useless though, none of them are, Garuda is always useful due to contagion , ifrit can be preferable in some fights, and as others have said, titan can tank dungeons if you play it right, I've run a few where tank left due to not liking the one that popped, and 3 manned it with titan .