http://www.ign.com/blogs/fragsdontstick/2013/09/26/the-evolution-of-halo-multiplayer
Came across this article and gave me an idea. Killzone has something similar with it’s Warzone custom game type MM. Why not have a custom map/game type MM element.
Not sure how this would work logistically but players would have a place to show off their creations. Maybe it could work like a hopper that every week a variety of submissions of maps/game types would be selected pending 343s trial and approval, then changed weekly or biweekly.
I know 343 runs forge contests but this would be more regular and persistent.
Also, I’d say this would be a social playlist, no ranks, no stats.