I often wonder if Direct Deals is a better way to order drugs online? Using Signal (get anonymous sims), Wickr and other means of decentralized messaging is probably the best way to converse with the vendors and order drugs from there. LE will have extremely difficult time tracking or hacking decentralized communications methods I listed above.
Everyone will need to learn how to use Bitcoin with multi-sig, then the arbiters with the absolute authority will determine the nature of the outcome and sign or reject the transaction(s). I think this is more plausible that way.
I am just throwing out ideas, feel free to fill in the void.
how are you gonna do a multi-sig DD? i don't think that's how it works.