I want a battle system that's not over complicated, i liked FFX's, it was simple and effective. I think they should have an older person (like Auron) in the party, i don't think it's cliche. FF is full of cliche, so something like that isn't really gonna bother SE that much IMO or the fans.
I would like to be able to fly the airship manually. I would like to see multiple disks like the PS1 FF games, it felt so awesome to see the 'Insert Disk _ Now ' come up after beating a boss