The people who protest are almost always the faucet farmers who don't have any intention to deposit, and just want to abuse the faucet to try to make money. I wouldn't bother catering to them. I agree with you in that 5 bits is enough, or maybe increase it slightly so that you get 5 bits 2 times, once when you join, and once when you request it. Some people might get confused when they first play and might want some more once they understand it better.