I say a more believable cast. Well, more deined cast. I don't care about Hope, he doesn't have anything to do with the storyline... Nothing.
I he was gone, what would change?
I say a more nonlinear battle system. Same with story.
More summons. I don't get attached to osummons that are weak and only stay for several seconds. Make it hard to get 9,999 damage and just increase the difficulty of enemies. I say get rid of the restart option, made the game tooooo easy.
The female main characters never make me feel like I have enough power to finish anything, so I switched to Snow when I could.
More FF... just anything but 13...
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