I got a great idea:

Add an armor color change animation for the game's launch. During the beginning of the match, when you see your team standing together, there should be an animation where each member's armor changes from the color you set your Spartan to in the customization screen the color of your team. At the end of the match, while the winning team is giving each other props, you'd see their colors change back to their personal colors.



This adds to the sense that you are controlling your own Spartan, and not just some other red or blue guy, which I always hated.



More realistic (and boring, but still important) changes:

I believe the KDA ratio should really be changed back to a KD ratio, as a KDA isn't not a very good gauge of skill.

Armor lock pickups and a vibration toggle in the settings would also be welcome. Please change rocket launcher back to the classic. This new one looks way too bland.

Also, the concept art should stay in the loading screen. Everyone loves seeing it.