I know for a fact Legolan causes critical errors.   

Guy has 80% win percentage but when i played with him he wasnt that good and when we were about to lose  crit errors attacked

Second time in towards begining of game(and he says, "that wasnt me") even though no one acused him or brought it up.

Then 3rd time I played with him and when I was winning crit errors crashed us. 

  Its obvious without a doubt this guy is causing crits and crashes  but anyways to report the guy so he gets banned.  There should at least be an in game system that lets people report someone of crashing or shows how many games you played that other people dropped.