This is a fun thing to read I have to say.  I will agree with one thing that is being said here, the fees (efudd).  I believe every developer should get paid.  I have seen your firmware and thought of trying it.  But the dev fees outweigh the rewards.  Now this is honestly your choice since you did do work to make it work correctly.  But a small one time use fee or a 0.5% could be considered more  reasonable.  Also the back door into your the miner shouldn't be there.  Bitmain does it, and I wish I was smart enough to remove it, but I am not.  Maybe that is something you could eliminate, for everyone including yourself.  But this is just my 0.02 so it means nothing.