I suspect support requests will come, whether or not a feature is there. Set a fixed fee, no donate or gamble option, and people will ask why there aren't those options. In fact, removing the betting option will probably see requests asking why, or future ones asking why not. I think we all know enough about people that questions will be asked, no matter how detailed explanations in FAQ can be
Yes, those questions will be asked for now. but then they'll go away won't they? In a few months, new users to chipmixer will have no idea that there used to be a gambling feature on it that used to exist. New users currently probably don't either so it does solve the issue. and I do like the donate feature instead of charging a fee as then you can set how much you can actually give them and that you can actually pull out chips as private keys instead of them having to send you the coins as then you get to determine your own fee and the delay you want to use.
The minimum is back to 0.001... but that's not anyway an impact since the betting is completely optional. No one is forced to use it, but it is an additional step to randomize output size. I still think it was a very good, very unique option others didn't have, but if there were a better alternative, I'm all for it.
I still think a separate gambling site where you get a voucher code or something to input would be a good idea for them tro try to do. Even 7$ is quite steep for an initial bet (it's usually nice to run quuite a few 1 sat bet to check everything's close to fair - at least 30% win chance on x2 bets).
As loyce said it served as a good way to donate to the mixer or to get a bit more back than you were expecting from tiny inputs - though maybe not many people actually used this function or peopel used it instead of the donate feature and the house edge was too low for it to turn a profit from that.
As TheQuin said also, it still says the 0.004
BTC on the main site @chipmixer, could you cange this when removing the gambling feature? Can you also change the bit at the bottom that says sessions will timeout after 48h and change that to the 7 days it currently is please
?