Ahh sorry for misunderstanding, I took it to mean that KH had no use for them anymore which I obviously don't agree with. And yeah, I do see your point, in fact it's another issue I have.When I say that the series outgrew it, I mean it in that Nomura introduced 50 characters that all still are woefully underdeveloped which left very little room for him to work with FF characters because he is clearly incapable of handling too many characters. The series has outgrown it because Nomura has made it outgrow it. Does that make sense?
Nomura could have easily culled the cast between BBS and DDD, heck even after DDD he didn't need to bring back Luxord, Demyx etc. But it feels like he just can't let go. As much as I like Demyx and Larxene and the energy they bring, I don't think there was any particular part of me desperately wanting them to resolve an arc like I do with Leon or Zack.
PfffffffffftThat's not conclusive proof. Letter could be from anyone.
I mean if you really want proof so bad you can hear it from the horse's mouth itself. Nomura explicitly says it's from Rinoa in the KH2 ultimania.