Get BotW if you haven’t played either, especially if you like less complexity. TotK adds more gameplay mechanics and areas (the sky and underground). BotW is a bit more straight forward. Plus you will appreciate TotK more after you play BotW.

Good thing it wasn’t actually banned.

I really need to play Xenogears. How is the OST?

I’m not knowledgeable enough on the software to respond to these claims, but the great thing about open source software is that you can raise these as issue on Github and they can be fixed.