I honestly think B is how it should have been since the beginning. I still do not see how you are even breaking even by providing your mixing services on a pay-what-you-want basis. Given, I do not know how much you are actually obtaining from it, but opening the doors would investing would definitely allow you to have a higher capital with which you could increase your chip pool which in turn would increase the privacy and attractiveness of using ChipMixer. Option A, on the other hand, would not actually fix the problem, but would just indicate when the problem is happening, which would result in less use of the mixer. All of this I say without actually knowing what kind of earnings you guys are actually making, but it is simply my opinion as an outsider.