Just use play money or have some promos for your loyal members.
This is a good suggestion and might be a good alternative to fight those faucet abusers. If there's no choice, this could be the last option so these abusers will stopped what they do with the faucet abuse on mintdice.
On that note, I hope our rain platform is coming out soon, I've played with it on testnet a little so it's at least getting close but I can't quite give a launch date for it yet.
Also, a good option to use rains instead of faucets and hoping that no more abusing will be found.