Suggestion to fix the rating system in shuffle the stuff suggested in this link would solve that problem.
Since you’re not interested in the details, just scroll past the stuff 'til you find the part with the suggestion. Anyway, it would solve that problem and is what you’re asking for.
It helps if you mention a way to solve it when complaining about something, since it both further displays how much Blizzard have failed, and also reduces the time it takes for Blizzard to come up with a way to solve it on their own (and we’ve all seen already what they’ve thought would be “improvements”).