I'd like it if players who stay long enough to receive a commendation but don't bother to give one, had any commendations they got from that run nullified. So if someone gets paired with a party of 3 in DF and commends no one, and the other 3 commend them, when they exit they see- you have received a commendation! x3 and then under that- "Commendations will not be counted due to abstaining from voting towards commendation' or something.