[TheGame]

Link... I think Halo 2 added MORE than enough to be worthy as a good sequal. I think your problem is you didn't play the first Halo enough. You'd be shocked how many little things you can do in Halo 2 that can't be done in the first Halo. And yes, the gameplay changes aren't extreme, but there is so many little changes everywhere that it hardly feels the same. After you beat Halo 2, rent the first again and beat it... there is much more there than car jacking and dual weilding.

As for adding features that have been in older FPSs... why should that matter? The first Halo got very high marks without those features. Halo made the jump from being a good console FPS in Goldeneye and Perfect Dark's leauge to now being the best home console FPS ever made (imo... and in the opinion of pretty much all the reviewers I've seen)