I'm not far into yet. running around Gaur Plains doing sidequests and haven't entered Colony 6 yet, but yeah I'm digging it. I really enjoy the concept of the affinity system, especially regarding the NPCs. While it doesn't seem super fleshed out, it feels like it has a lot of potential to be something really unique for an RPG. Do any of the further installments in the Xenoblade series do anything further with it?