Regarding to movies and videogames i try to keep a little away from trailers and things like that, because i found that very frequently major spoilers are given out.
The last thing i would ever think of is the removal of multiplayer, because its dumb, halo IS multiplayer, its not just a feature....
And not that halo 4 looks better it was just a rough comment but have you noticed how awful and poor shadows look like? Logos and signs on walls look pixelated... There are many graphical opportunities here :/ or maybe all this flaws look increased for me due to the lack of escencial Halo things lost