I'm pretty sure plenty of great games could be made from the KH franchise, just not entirely underneath Nomora. He's made some mistakes and keeps tweeking it, which isn't necassarily horrid just bad if you want a long going game.
I'd like to see less surrounding Sora stuff and more building on the origins of everything, completely spiral off the Sora/Riku/Kairi tangent, and just focus on how keyblades came to be, how people reacted to them and learned to control them, the discovery of darkness and all that good stuff. BBS was great, don't get me wrong, it's just that the ending was somewhat upsetting since it all just came back to Sora [which... I don't really think is a spoiler, we saw it comin' somewhat].
Also, I don't mind getting old and my childhood games continueing with me. It's like some other franchises you just follow, no matter how aged you get [for example, thirty sommat year old mother still loves chocobos and final fantasy with all her heart].