An option by the friend list or after the game ends that lets you write a name of another player or select the user name of said player after the match ends which then adds it to a banned players list in your own account and after you do that it automatically kicks you out of the server if you get matched with the person who is in that list of player(s) you don't want to play with.
[this is in classic mode] (I know I was asking for it playing in classic)
I just finished a match with gamethrowers in town not just one but a lot. First they killed the doctor right after the serial Killer just died by jailor there was no Counter claims for doc they voted guilty cause someone else called them a commie, A Vigilante who shot the escort after the escort claimed it during the day over the mafioso who was called out by a lookout the day before and they then claimed Tk so vig or vet, a bunch of town who killed the lookout who called out the Mafioso because they got mad at the vig for killing the Escort who claimed during the day. The jailor refused to kill the mafioso after the lookout was killed.
It was framer jailor mafioso and medium left, the mafioso was called out by the now dead lookout who called out the mafioso the jailor kills the framer and mafioso killed the medium so its just the jailor and mafioso left and then leaves the game and mafia wins. Best gamethrowing town I have played with in awhile.