What they need to do, is make a FF game that isn't a bloated cluster F' full of CG CS's that costs 100+ milion to make.
scale back the graphics, make it more bugety, hell maybe even a download only game for X1, PS4 and PC.
Cause that is the problem here, these god damned things have turned into Epic Scaled bloated money sinks. Then to make sure that they make their huge investment back, they have to make sure it appeals to the most people. "turn based" isn't an "In" thing at all, so that has to go, slower paced story driven game play isn't ether, so that has to go, ect.
If they only had a budget of like 10 mill or so, then they wouldn't NEED to appeal to everyone, they could do a "smaller" game that the fans of the series would enjoy, and if it doesn't sell 5 million copies, who cares.
hell I'd be willing to drop 40 dollars on a FF16 on XBox that was download only and more of a throw back to like FF6 or FF9, but I doubt that'll ever happen...