I don’t know how Reach did it, but custom games are not as nearly popular as they used to be. Zombies are more fun when your k/d isn’t effected and Reach is way too competitive. Bungie thought that Arena would be the bastion for competitive gamers, but its not.
I want to see more non-competitive playlists and a renewal of the custom games community in Halo 4.
Halo is better with friends and the overly competitivenature of Reach has pushed many away. I want the community to be both competitive and Fun loving. No more one side or the other.