I can start, I suppose. I'd imagine something more akin to Persona 3 Let's get the simple out of the way. Colour is green. Velvet Room is a garden. Velvet Attendant is a gardener named Henry (a guy?!). Main themes being nature and finding a reason to live. It would be quite similar to the original idea of Persona 5, with backpacking and taking place in a lot of different cities and towns. I want to bring back Philemon, because he just wasn't mentioned for a bit. Philemon would likely arrange this trip in the first place to fight off shadows caused by some god (Chaos probably). As you backpack through the country, around 7 people will show up and want to come along with you on your adventure. They only show up in the first half of the game, because they deserve time to develop as characters.