How can Kingdom Hearts appeal more to mainstream Disney fans?

[Ouch!]

There's a general question I have, since Disney has bought up Pixar and Marvel, is it possible we are going to meet some of these characters in the upcoming games? (After Birth by Sleep, if at all)

It's not that I wanted it or that I didn't, I'd only like to know!

I'd say it might make Disney rescind its declaration that we'll never see Pixar, but I wouldn't be betting on Marvel any time soon.

I think the game should also be partially developed here in the United States, instead of fully in Japan.

Having two separate development teams working on the same game from two different countries seems like an absolute nightmare to me, to be completely honest.