So it seems the new trend is for solo guardians to jump into strike matchmaking and to keep joining/ quitting until they find a strike that's right near the end. Collect their end game loot then leave again. Whilst I love the mechanic of the matchmaking and how if someone leaves right at the start it can still find you a third, it sure does get lame having to slog out the entire strike as a duo just to have a third join with just enough time to fire one round at the final boss. A simple fix would be to configure a set point in every strike where if anyone joins after set point, they can participate but get no end game rewards (for that strike only of course). Edit Or introduce a cool down on being able to select the vanguard strikes if you leave before the end.