The last two updates (changes to Nightfall and some random clan) could both be resolved by one single thing: Add matchmaking for everything, including Nightfall. The Weekly Heroic has proven that matchmaking works just fine for high-level strikes. Even raids could benefit from this. If you join a group you don't like, just leave and join another one. Players shouldn't be asked to join a clan simply to be able to play major features of the game.