I tried "In Progress..." joins and never again.

When I was waiting for the first one as CNJ I thought. "Why would the CNJ in a party be gone? Was the tank/party crap?" Sure enough ended up in a Longstop run that had not passed the first boss because the tank was a total bag of fail. DPS said it was their 4th try. Tried it once more just to see if it was dumb luck and again. Another party where the tank couldn't find his ass with both hands and a map.

Joining "In Progress..." sounds good on paper but in practice it only causes more rage.

Not to mention its bug where people click the "Find more players..." button AFTER the run is COMPLETELY done.