By the way I've been playing The World Ends With You on the Switch, I bought the game a long time ago but never started playing the game until recently and I'm really liking it. The style is great, music is absurdily phenomenal, and combat is cool and fun, even if it obviously feels like the game was designed with the DS in mind. It takes a while to get used to but after that the combat works relatively well with the Joy-Con.
So... I'm really into the idea of Neku for Smash. I mean, I was already on board with him, but now I'm even more into it.
That was Kitase, producer of FFVII Remake. He said the team also wanted to remake FFVI, but obviously that doesn't mean it will happen. If it ever happens it will be after FFVII Remake project ends.
Best approach for FFVII would be something similar to Octopath Traveler, I think. If FFVII already is a lot of work to translate to a bigger scale, I think VI would be even harder. The game has also the biggest cast of party members in the series.