In my honest opinion, the faucet is more of a curse than a blessing. The amount of issues it has caused has been substantial, not just on the support email front but in chat too, and over such insignificant amounts. By adding a faucet it effectively brought in a new demographic of people in - not players - people in, and those are the people who spend 5 hours a day scavenging at faucet sites to bring home 0.0001 BTC each day. Why they do that? No idea, but to most of them PD is just another faucet site.

I'm not saying all faucet users are bad, I do use the faucet for some "yolo" bets (I guess) every once in a while and so do some others, but the problem with bringing in that demographic is that 75% of those people will throw a temper tantrum if they don't get their dust successfully. It is one of the peculiar phenomena created by the Bitcoin community.

With that in mind, here are my personal suggestions:

a) You could just remove faucet. There would probably be a loss in users but the vast majority of those users would just leech the faucet anyway;

b) Keep the faucet as a promotion which is activated and deactivated by admins; (Implement an admin command which flicks a Boolean which allows faucet to be claimed)

c) Make it so you unlock 1 faucet use every x amount wagered.

a) has obvious benefits.

b) will still have the same problems as before but it will be MUCH more manageable.

c) will still have some problems of people complaining but it will be more manageable and faucet farming/abusing will basically be eradicated.