Due to issues such as the above is the reason why most sites just got rid of the faucet all together. Lowering the faucet amount didn't seem to help because people still figured out ways to abuse it so most had no choice but to just remove it and just do some promos instead for the gambling site.
This actually happened in the past with various sites that had faucets. Someone would waste hours of their time abusing the faucet, then get their account banned and go on the forum usually post something with very bad grammar and complain that they weren't fairly banned.
The site operations can easily tell when someone is abusing the faucet and it's very easy to spot. The abusers just do the same thing on a different day and think they will get away. But they get caught as usual and their withdraw is flagged and cancelled.