I think you should use the data from the players in game reporting. A bit like a monthly ban list. If they report someone as having a 'Bad Connection', then don't match make with that player for 1 month. In a month, maybe their connection has gotten better. Same with if they report as 'Highly Skilled'. Don't match make with that player for a month. Useful if that player wrecked with a 3.0 KD rate and was essentially the difference between the teams winning/losing. This is like the players determining who they do and don't like playing against. Then they have nobody to blame but themselves. If SBMM can't pick balanced players, let the players feedback help manage it.