I'm kind of disapointed that there is no firefight in halo 4, but i suppose there wasn't one in halo 3. I definitely think they should have put it in as it adds longetivity to the game. Also the grunts look waaaayyyyy different! (or is it just me)
Halo 4 is great, and the multiplayer is a lot of fun, but the last few levels of the campaign were a bit dull, and they removed the most fun vehicle; the hornet. I would gladly have traded the pelican in the pelican flying section for a hornet.