I think I'm most excited about the graphic upgrade...seeing Halo get the 360 treatment, with textures on everything and that water that Frankie has been talking about so much.
But as far as gameplay, I don't think it needs too much of a polish...That ManCannon sounds like alot of fun. I'll be pleased when I don't have to superbounce to get to high places to see everything. And the Mongoose will make CTF a whole new game entirely.
I'm really upset that there won't be online co-op though. :death: