I've not ever played that game but I've seen it done very well by folks over the years. IMHO the only thing the quality score will do is rotate those game players out faster so instead of having the same ones there all the time it'll just be new ones coming and going. There's always someone who thinks they can game the system. I'm guessing the quality part of the quality score will be doomed to failure but the financial part of it will make Google more money than it ever has before.
Congrats and continued success to you!