For me, it’s one of two choices:
Final Fantasy VIII - It’s one of my favourite entries in the series and think they’ve ignored it far too much over the years. There’s a lot they could do with it, not just visually, but with the story and mechanics too.
Final Fantasy Tactics - This game is just fantastic all round, and I can’t say any more than that.
What would you choose?
They could expand their franchise so much. It could reach into different genres. Turn-based rpgs, strategy rpgs, action rpgs, card games, moba, etc. They don’t have to be limited to rpgs. They have a lot of content and a strong brand to work with.