I admit I'm a bit out of my technological depth here so this may be an obvious question but does a master node maintain anonymity?
A follow-up question if the answer is 'no': Could there be grounds for the prosecution of a master node operator for money laundering?
This is a very good question.
Obviously the Masternode has no anonymity. I think you just identified a key weaknesses.
No one can predict what the government will rule. If
Homelust ScrewUrity can create the TSA to let aspiring closet pedophiles put their hands down your kids' pants and jackoff in the viewing room to your wife's nude Infrared breasts, there is nothing they can't potentially do.
It would be much better if the ones doing the mixing are anonymous too.