How can Kingdom Hearts appeal more to mainstream Disney fans?

[Ouch!]

I think the most important point to attempt to drive home is that there is a significant rift between the elements of the Disney franchise appearing in the Kingdom Hearts games and the type of Disney schlock we get through the Disney Channel. Movies like Beauty and the Beast, Alladin, Hercules, etc. are legitimately good movies, albeit aimed primarily at younger audiences, which just about anyone can enjoy (which would include an RPG's target audience). The stuff on the Disney Channel is crap directed at preteen girls (not the target audience of any video game). I'm sure you're probably already aware of this (and I hope for your sake that you are), but you being a 20-year-old male and enjoying Disney Channel television programs is atypical of your age group and also atypical, I'd wager, of the target demographic of just about any video game Square Enix produces.

It may not alienate you from the games by adding that kind of in, but you can't possibly be so ignorant of the Disney Channel's relative unpopularity to truly believe that it would mesh well for larger audiences...

I think how Pirates of the Carribean's inclusion in KH2 didn't work so well is an example of how putting even good new Disney (the first move was good) has backfired. It didn't mesh well. If good Disney from the 21st century isn't meshing well, how do you expect bad Disney from the 21st to be successful?