I don't think the next FF should be traditional like NNK. One of the main draws of FF is that you're always getting something different. Though unfortunately that sometimes leads to games like FFXIII. I hope it'll be like FFXII, but with many improvements.
Just make a new FF, that is traditional and with different location/music/scenery/story/characters and the world would be at peace. Not this gimmicky FF13 stuff.
Although, I will give Tetsuya Nomura credit. FF13 Versus looks awesome, except its taken like 500 years and still isnt done, and it makes me mad that it's slowing down the production of Kingdom Hearts 3. Makes you wonder if FF13 Versus is gonna pull a Duke Nukem.