Quote Originally Posted by Razard View Post
The game you want already exists. It's called Dissidia.
This.

Also, Doma isn't a place on the First in FF XIV as you claimed, but on the Source. Then, some villains like Kefka and Exdeath are already in the game...

And lastly, my personal opinion, it wouldn't be a really good story, but a Fanservice Feast that would take away from FF XIV's own identity.