Quote from Zero(pS)I'm pumped for clans...
... as long as they increase the maximum amount of players that can play together otherwise I don't really care that much about the feature.
Seriously, I kinda understand why they can't make a coop with that, but there's nothing stopping them from putting 2 teams of 4 players against each other competing in similarly randomized Loot Runs and Nephalem Trials (or Exploring/Devil's-Hand/Bounty-mode if these are doable).
Do it, Blizzard!
Ouuu that would be fun and an easy way to add a ladder for certain things.