Final Fantasy X d20 (PDF Now Available!)

[Drglenn]

You might want to add atribute modifiers to the DCs for class features that inflict statuses, allow saves for half damage etc. otherwise the DCs are going to be quite low. It also gives some point to having mental stats (Int, Wis, Cha) other than skill bonuses for the spellcasting classes

Also it might be an idea to make aeons large to start with. All the aeons in the game (except Mindy and maybe the other Magus sisters and Yojimbo) are at least the size of Ronso, which you have classed as large