Destiny Fight Club. (Destiny)
Well, I know no one cares about D1 anymore(so don't come complaining that I didn't tell you earlier), but Challenge of Elders had a hilariously easy loadout this previous week. The modifiers were Brawler and Catapult, and the Bonus was for melee kills!
So, a straight up Destiny 1 mosh pit. A Destiny 1 mosh pit where you were invincible(with the Ram). ;-)
I bet Hunters with throwing knives and Titans with Force Barrier(or Feedback Fence) could have a lot of fun, too!