I do not see them ever being BLMs because your elemental skill is capped at half, and fighting things half a lvl from your main is no fun.

You are support, and thats mainly it. You CAN do alot of dmg at low levels, but that costs you your two hour ability and all your MP doing so, it does an area massive damage, around 500 in 40ish lvls. But its not really say consistant until the higher lvls. So pretty much healer and group buffer. Its not crappy buffs...Hasteaga, Fenrir's Elipic Howl, and Aerial Armour(Blinkaga) are real useful.