The vidoc, full matches, and impressions from top players (Gandhi) all looked and sounded pretty good to me. It's quite a bit different from classic Halo, but it sounds like they're trying to be careful about balancing all of the new abilities to keep the game competitive. As long as map control is still important - which it sounds like it should be, as power weapons are on a set timer ala Halo 1 - then I think it will be fine. One thing that I only saw Gandhi mention is that the aim magnetism seems closer to Halo 1's than any of the sequels, which is great.