Quote Originally Posted by superhbman View Post
Maybe it's future-proofing? We're already sitting at level 4 Fire, Blizzard, and Ruin at level 70, and I don't know how many expansion we will have in the future. If we were to use those names, the last one is -ja at level 4 if I'm not mistaken. Then we would already have the strongest version of Fire, Blizzard, and Ruin the game could possibly have right now already.
To my understanding the Fourth level spells actually don't have a set name at least for SE. -Ja was used in XII I remember that much, yet Kingdom Hearts uses both -Za and -Gun with neither neccessarily being known as the more powerulfull one. So they have options to go beyond the fourth tier.