A four-foot cardboard cutout of the league champion lives in the loser's living room until next season, and in dynasty versions the cutouts accumulate year over year into a cardboard pantheon. Guests must be introduced to it. Video call backgrounds are checked for compliance.
The long haul: this is not a one-afternoon sentence. With a time commitment of full year, the punishment keeps paying out (for everyone else) long after the season ends. Long sentences need a written end date and a league-appointed enforcer who checks compliance.