I have decided on what to do in regards to Tsume and Hige, as in, a bit about their prologues and where they're from.

I have also realized that I may have to add more locations to the world itself, just to give the cast things to do. That includes implementing towns and dungeons from other WA games, as well as increasing the size of some towns, like Damzen City and whatnot. If anything, I might also name some areas from those in Wolf's Rain.

i look forward to reading this!

and i mean i always assume RPG worlds have towns and cities we just don't get to see because plot, myself

Yeah. I'm also contemplating adding "cameo" characters from other WA media, like WA5 did.

Yes!