Almost every siege game I join below 16 players ends by a ''Teams not fair to justify multiplier'', getting no bonus from winning even after making a real Lots of efforts or a getting very deserved win when sometimes teammates doesn't do well.
Getting in a balanced team or not is totally out of control of the players. The only thing they can do is do they maximum on the game to learn finally that this game was lost in advance because of the level of the players who joined.
This gives the siege servers (which becomes empty every day and needs to repopulate) a very hard time to start games with players, discouraging players from being there as they get this message about every beginning game when a new map starts and sometimes at other times too. The loosers of the team that were crushed don't get any more compensation either by knowing (or not) that the other team have got no multiplier at all.
If players have no power on this message, and if the loosers don't get anything more from having being crushed, why then shouldn't we not give the multipliers to both teams? Since it is a problem of the server player repartition and only wastes some fun while giving a hard time to repopulate the servers? I think this would help the mod, and on the worse, give more fun to the players, giving a real something to the unbalanced team that's lost by giving them a multiplier,(as removing something to the team that wins brings them nothing).