I will agree and say that 150 satoshi per hour is considerably lower than the current industry standards. I would call the standard average claim amount per hour between 500-1000 satoshi. If you can target this amount, you would have a very popular faucet.
A great thing, for all of the Xapo users here, is that the balance has no minimum threshold. The moment you click on the "Cash Out Now!" button, your earnings are moved to your Xapo account.
All in all, raise the rewards a bit more, and you have yourself a nice faucet