Yes, I understand that and don't have a problem in my side. Your service creates the recommended privacy by making 3-5% fee by default.
but there is also that member who doesn't need that, I once asked my friend, and answered just wants to mix, and doesn't care about privacy  . Because I see they are often to use mixer when the website can set the fee, can set a time (not 3 hours), and doesn't have minimal like 0.003.

it's just my suggestion, I don't have a problem with Mixy.Money where I tried and success mixed my btc before.