Heartless, nobodies and unversed all led by master Xehanort.

 

During the final level, you have to fight darkside, twilight thron and a unversed boss at the same time.

 

How cool would that be

Very awesome.

In the Keyblade Graveyard, under a dark sky, Kingdom Hearts looming above with Master Xehanort watched you fight the army from afar atop a cliff.

In the Keyblade Graveyard, under a dark sky, Kingdom Hearts looming above with Master Xehanort watched you fight the army from afar atop a cliff.

Oh,my god, yes! That could be so awesome..And maybe like in end of the world, you have to fight all the heartless, but also the disney villains again.The phantom blot could appear as a heartless (looking like his epic mickey form) and Chernabog

I was thinking the same thing...

Battle scene starts with a "My friends are my power" Cutscene with all characters in battle stance a few feet away from Xehanort who has heartless (mostly at least) and the rest of the enemy creatures, swarming around him and his cat-like eyes are glowing fiery yellow. Xehanort would have Max HP with really high defenses like No Heart in BBSFM and it will take at least an hour to defeat him or so (hey, who doesn't like a challenging long yet badass boss fight? especially with Xehanort? ) and throughout the battle, there will be QTEs dealing with Sora and his friends, as they use them to either dodge an attack, or do a significant amount of damage to Xehanort. Ya, I think this would make me VERY happy. 

That's what I'm expecting during the final battle! I'm expecting Xemnas, Vanitas and Ansem to show up along with Master Xehanort and each of them (except MX) would lead a part of the army. Xemnas leading the nobodies, Ansem leading the heartless and Vanitas leading the unversed!

I actually thought about this same thing a long while back.  Sora and friends would be inside Kingdom Hearts, and thunder would be crackling, as hordes of Heartless, Nobodies and Unversed marched straight towards you, relentlessly, without letting you have time to stop between attacks, and well, then finish off the old coot.  But I didn't think about the Darkside, Twilight Thorn and Trinity Armor bosses fighting you.  I'm impressed.

It would be pretty cool if all 7 lights were party members at once in a huge battle against thousands of Heartless, Nobodies, Unversed and whatever the new enemy could be if they add a new type. 

Nah ...