Quote Originally Posted by soranokira View Post
not for those who have 30 rainbow fairies to throw. it's still an optional thing IMO.
Can't really imagine situation when you have 30 spare rainbows. Even if you are unlucky enough to not roll premium plats/blacks, that still leaves unit drop events and golds. Besides if your luck is shit 30 rainbows might get used to max skills of no more than 2 units.

And for 3SC's you would spend on last skillup you get value of skill awakening, bonus 10% defence and attack increase during skill use, the value of ~4 rainbow fairies, tin can and plat fairy. Pretty good deal if you ask me.