I thought of it as to drive sales to be honest. I didn't take into consideration they'd consider a sequel, that's good too.
The thing with KH and TR is that they're so Sony I don't see Nintendo accepting that. TR is a life long Sony and KH just barely scrpped Nintendo but it's mainly Sony. Plus, I don't know, but I very much doubt KHIII would play on a Switch. It can, but no way as good, and I don't think Square (or Disney) would like or allow that. I mean it's a flagship, deck has to be super polished, not a jaggedy staircase. Also, didn't Sony sign up some kind of exclusivity for KH. That would put it miles away before a port. So, the only option I see is DQ. Slime does work well, but Neku works better (to me at least). Again, drives slow sales for a needy title, better than a title that doesn't need an introduction.