I like this ideaThe solution is super easy. Any form of group in Warmode gets phased away to it's own cluster. With their sharding tech that they're super proud of forcing onto players, it should be easy to make this happen. You can even have it broken down further where raid groups are clustered together in a shard and parties up to 5 are together in a different shard. It's not a hard solution, Blizzard just doesn't care.