How can Kingdom Hearts appeal more to mainstream Disney fans?

[Ouch!]

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.

What would make you say that? We are trying to appeal to mainstream Disney fans, and I mean AMERICAN Disney fans, right? Perhaps the SE American subsidiary, Square Enix, Inc. , should develop the game with American Disney staff...

The Japanese are interested in Japanese fans, and Americans are just an added bonus. Seriously, the first thing they consider is their own country, which is not so hard to imagine. Don't forget that there are a lot of Disney fans in Japan as well (which is one of the main reasons KH even exists).

Japanese anime and video games are largely underground in America. Why is it that American entertainment is very popular in Japan but not the other way around as well?

What bizarro world are you living in? Japanese video games and anime are hardly underground by any standard. Try and find someone under the age of 30 unfamiliar with anime. Hell, almost everyone I know grew up watching Dragon Ball Z, and a great many of them have gone on to watch at least a few other shows. You must be taking crazy pills.

Also, if you want to completely screw up Kingdom Hearts, go ahead and tear it away for Nomura and give it to a completely new development team in America. I mean, I don't have a lot of faith in the guy to make complete sense, but I have even less faith in giving the project to someone else to try and figure out what the hell was going on in his head.

It's great to have all these solutions, but they're useless conjecture unless they're at least based in some form of reality.

Really let's not touch the whole American/Japanese thing. You should have learned a long time ago from your surnames thread that such is an argument that's not going to be productive. Square Enix is a Japanese video game company. The game is a creation of the mind of a Japanese man. It is designed and programmed by a team of Japanese individuals. Trying to Americanize it in the seventh installment in the series is just silly.