Dear god. I hope your trolling.
Why? I know it's self explanatory but it sucks knowing that you can't get by at all by having a card or two when there are people with 20 to 40 cards or even more running.
Well it "sucks" that people buying special hardware which costs a lot of money that they make more money, but the part about preventing that a botnet could mine for itself is ridiculous, otherwise none of the pools should be allowed...