Full disclosure, while posting this I am wearing a sinbad signature.

I think, over time all mixers are going to be shut down by various government entities. Even if they are doing nothing illegitimate, for some reason everybody in law enforcement sees them as illegitimate. I will also say, with more and more exchanges that are not requiring KYC going away I see privacy becoming more and more difficult to obtain.

Continuing with that thought, I have posted many times about various ways to somewhat reliably break proof of ownership of coins. It requires time and effort a decent knowledge of exchanges and (this is important) hunting down exchanges that consider a simple SMS and e-mail address enough KYC for a certain level of withdrawals. Because, if you deposit coins in one exchange using a disposable e-mail and phone number, convert them to another coin, transfer that coin to another exchange that just requires an e-mail address and disposable phone number, and then withdraw from that second exchange after converting to another coin good luck ever being able to prove anything especially if you used XMR or other privacy coins to transfer between exchanges.

Tinfoil hat paranoia, the last mixer that is left standing is run by the NSA....

-Dave