My favorite class ever of all the games I've played (and there's lots) is Enchanter in EQ. Much like kyuven, I never wanted for a group. If you didn't have slow and or CC in your group, you went slowly and it was rough on the healer or you just couldn't do it.

Sadly, I don't think the FFXIV content outside of the very difficult raids really call for support classes and it doesn't look promising.