I like the format that Microsoft have used these past years where they just go through trailer by trailer quickly, but it does leave very little space for the games to be expanded upon, so when most of those trailers are CG trailers without any gameplay it becomes a negative. Like, I'm not sure what a lot of the games I just saw will actually look like if I were to sit down and play them when they come out, and that's the actually important part.
Other than that it was solid, I think there were a lot of good games on display, but unfortunately I can't really say for sure, because like I said, we didn't get to see a whole lot of gameplay. Microsoft will have a lot of momentum going into the next gen though, they've really built a solid base to expand upon, and Halo at launch is a safe winner.