Don't forget a possible CG secret ending.
That's just a rumor. But even if it was true, you might as well just watch it on youtube.
The only things I'm wanting to do is Monstro, Secret Episode, and Eraqus Armor... but that's not enough to make me buy the game 3 flippin' times.
Because it would please fanbases, and who says that it has to be a 1 hit kill thing, let it be a short battle to please the fans. As if Nomura hasn't done that already. *cough*days*cough* Personally, though, I don't really care much for a battle. It'd be cool, nice nostalgia, but like nearly everything else in this FM, nothing to get worked up over.
It still seems dumb and pointless. The whole point of the cutscene is to show the relationship between Lea and Ventus beginning. If you suddenly had a random battle coming out of nowhere, it would just ruin the flow.