The reason you didn't see a knife was probably because the Spartan models are unfinished. They are mOST likely not going to look exactly the same as they do now.
I've thrown my controller many times in rage. I think it must be reinforced with steel because it's made a hole in my wall and it only has a few scratches.
I voted no. First off, the announcer gets annoying, but also i find it's a little bit of cheating. If the game designers meant for you to run at normal speeds with the flag, they would of just made your running speed faster while holding the flag.
So far, I have high hopes for Halo 4. I know lots of people are mad about custom loadouts and aa's, but i think it will still feel like a classic halo game.