I would like a medieval based setting kind of like FF9. Like somebody else mentioned an open World like 12.
One thing that is of great importance is that we get some mind blowing towns to explore on our lovely next gen consoles. I mean Lindblum was great on ps1 so imagine the capabilty for a huge town now we are on ps3. That is what 13 lacked, a town to explore with loads of NPC to interact with just for the sake of it.
A real evil bad guy is needed as well. Kuja was the last great antagonist so that needs improving.
A chess based mini game could be interesting,we have had cards and sport so a new mini-game is a must after the lack of in 13.
1 last thing would be a bit more charecter control out of battles, for example when exploring a area with NPC maybe we could be able to steal from(if the charecter is a thief) or random encounters where you can save an NPC from a mugging etc (if you want to save them that is)
Basicly FF15 needs to remove the stabilisers/training wheels we had in 13 and give us a awe inspiring world with a great story line which keeps us busy till FF16. (I don't want much... but I want it now)
