I'm new to the forums. So sorry if this is a repeat post.
I loved in halo 3 how the grunts would scream funny things, or just do things to make you laugh. Halo 1-3 had a lot of funny moments, and it got to the point where comedy was expected, and Bungie did a really good job creating it in easter eggs and stuff.
I am afraid that in halo 4, almost everybody has said that it is going to be more serious, and have a darker tone with Cortana, and Rampancy. Plus the transition from bungie to 343. (I know 343 is made up of die-hard halo fans) but there is still a possibility that the humor of the halo universe has been lost there.
Also I was reading in Xbox magazine that grunts will no longer have face masks, but tubes going to their nose. The said that this was because "They wanted you to see their mouth, and they emphasized about it was mostly the teeth that they wanted you to see. He said that it is hard to be scared of a little creature with a shrill voice, yelling that was my friend! and running in circles when you shot its buddy.
I pesonally liked that kind of humor in the games and I'm afraid it's not going to e in these new games.