I'm perhaps the only person in this entire forum who is indifferent towards Kingdom Hearts.
I just wanna get my Black Hawk Down and Three Kings on, you know? Santa gets shot down, his presents get stolen, and we have to recover them. It's simple on paper, but in practice? Expect urban combat in the same vein as Stalingrad.
Maybe we can integrate it with the Kingdom Hearts plan in order to get the best of both worlds. Instead of assassinating Santa, Roy, Motoko, and Kira are pressed into saving him instead.