I know it’s too early to say how exactly weapons will look in the final game, but the AR they showed looks odd to me. It has four different colors: Light gray, black, light olive, and gray-blue. They just don’t work for me.
The BR also has the black panels over medium gray and a yellow stripe, and I personally like the Halo 4 BR over this one.
I know these are nitpicks, but that’s just what I noticed.