Will Thundaga be improved when Black Mage is released?

As of right now, I see no benefit to ever casting this spell.

Fighting regular mobs such as Amaj'aal Zahar(modifierlolz)'ak drubbers I decided to use it. It roughly, without buffs, does the same damage as Thundara or less. With buffs the most I have seen mine do is 1500 range.

My Gear is average Red Felt Robe of Casting+1, Red hat of Intelligence, Boarskin Ringband of Storms, Raptorskin Belt, Woolen Tights, Vintage Cudgel, warlock pattens, with 4 Black Pearl Rings, and Thalassian Targe.

Materia only on My Hat with Intelligence giving it 20 Inteliigence, and the Materia with +7 to both Piety/Intelligence on the woolen tights.

It costs 546 Mp, that's 168 more MP than Thundara. It's bonus isn't noticeable after being used. It has a cast time of 5 seconds which doesn't give much time to be buffed before the combo ends.

Making it instant cast, I don't feel will help it out, this thing needs to do 1500 damage without buffs or critical hits. Reason is Thunder, costs 210, does around 400-600 damage, while thundera ,costs 378 which is 168 more Mp to do 600-800 more damage. So Thundaga should be able to do 600-800 more damage than thundara, and be instant cast with it's large recast and a noticeable critical bonus after.

I would also like a hat emote, where I adjust my hat like Vivi in FFIX.