I don't understand the high cash out threshold (20,000) because you use a micro wallet. Micro wallets are born to handle micro transactions.
We use the micro wallet so we do not have to pay transaction fees.
If we were to transfer directly to wallet we would have to lower the prizes, discount the fees at the time of withdrawal or increase the threshold to at least 100,000 satoshi to offset the amount of the fees.
The threshold is high because we do not have enough traffic yet. But as soon as possible the threshold it will be decreased to 15000, then 10000, and if all goes well, zero the threshold and leave a simple time limit between one withdrawal and another.
I know using micro wallet saves you transaction fees. But why the high threshold when you don't need to worry about transaction fees? Your faucet could simply function like many other instant-paymented faucets, which send satoshis to users' micro wallet accounts instantly right after users claim their satoshis.