Let a studio do it that's not the first choice for making a brand new entry in the series. Also, maybe plan on 5 years dev time instead of 20. And yes, I'd love remakes of such games. Classics of the genre deserve it.
Id rather then do a remake of FF6 but they already said it's not quite possible. A fully anime fleshed out FF Tactics with the same style of animation they added in the PSP version would be great tho. Such a under the radar FF game.