So there were features that you played that weren't in the release?

Go see this for some of the things that were taken out as far as objects and such in the world. At E3 2000, the game was a lot bigger in scope. The aliens were going to be playable. And the size of the world was going to be much larger then it ended up being. They wanted to allow users to run around the entire ring, but I personally knew that wouldn't be feasible from a time standpoint. But, seeing the final product, the size seems much smaller then it should have been. Also, the game seems to contain quite a bit of repetition in level design. To me, the product deserves a decent rating, but not the insane ratings it has been given.

It's doubtful any of this will appear in Halo 2, as the story is shifting to Earth. But, some elements of the original ideas might show up in the PC version, as it has been stated the PC version will most likely have more missions.