So ever since the Joining Allies system was introduced, I've seen more and more players taking advantage of it and not participating in the strike. I report these players for inactivity. What exactly happens when you report these players?
At a guess when enough complaints are in to push that person to the top of a list Bungie starts investigating. For inactivity they could face temporary restrictions increasing in length if they carry on offending. Bans seem to be for major offences such as Lag switching.