ONE Thing that I would have made different in any Final Fantasy

[Sephiroth]

I really wish there'd been some mention of Necro in FFIX before the very end. That's really my only major gripe about the game.

He was mentioned but really very subtle. That is true. He is very random. I think he is okay this way but I could have lived without him and fought Super-Saiyajin 4 Kuja in a second battle instead, maybe even standing for the power Necron represented as Kuja was the Angel of Death anyway. So not that dramatic in the first battle as it looks but writing that in the second battle when he goes all out waah SSJ4 Genkidama Trance Kuja power, share your energy with me and is all "you're going to the place beyond with me!".