Hannabi at 2 players and Hannabi at 3 and more players are completely different games. Some people win huge ELO points at 2p game and then come at 3p as Master while they actually don't understand the 3p game at all.
It would only improve the quality of the 3p games (which is the real game!) if two different rankings existed.
It would only improve the quality of the 3p games (which is the real game!) if two different rankings existed.