i like the amount of aeons but i do think there should be more but if there was loads it wouldnt fit with the aeons summoning thing there would be too much and the game would be too long but i think they should do something like the summons on FF7 like you obtain the aeon summon it then it does its powerful attack then leaves and you can only use it a certain amount of times depending on how long youve had the aeon and how much times youve used it and things like that.