I wouldn't be interested in it.
This isn't Disgaea.
This is FF.

Another fellow started a thread asking for a return to the old style I guess.
I don't think he likes the futuristic settings.

In FFX while it was mostly old school there was futuristic stuff in the cities, in Bevelle in particular.You saw more of it in X-2.

In XII you had the nethicite and the airships.I do think it's hard to have castles and swords on one hand and power beams and air ships on the other.

I think the games need a mix from game to game, some in a rustic style with castles and swords and others more like mass effect with ships and guns.
That would appease both sides I would hope.