How can 343I improve the next game?

Basically, this post is to come up with ideas that could hopefully make some improvements for the next game. So if you have some ideas or suggestions for some improvements, post them here. Be constructive. Be polite. And hope these ideas could work and make it into the next game.

Erm. There’s already plenty of “suggestion” and “feedback” threads open. We don’t need another super vague one.