I think problem with rating in BG games is not so big. Most of the cheaters are pawns so they will disappear in one month w/o finished game. And if someone will earn high rating due to his skill and luck, than he wont be able to defend it in longer period. In BG it is not possible to win say 25 games in the row. And if yes, you are really good or lucky player and probably both. And every defeat will cut your BKR by HUGE ammount of points. Especially if it occur in your very games. But it does not mean I am accepting cheaters. I really hate people who play only side with advantage. I would appreciate rule, you must have at least 33% finished games with color with disadvantage. And if not, you will be expelled from ladder until you fullfil this condition.
I comunicated with Filip about cheater too, but my evidence wasnt sufficient.