I've always wondered, would it be possible to have a system which is resistant to rubber hose cryptanalysis? Maybe a poison pill system which locks an asset until a future point in time, using smart contracts or something. You feel the heat and send your assets to such a time-safe, and no one would be able to access it for X months/years. Of course you'd need some data storage model to escrow it safely, but that could be hosted in some privacy-friendly country. Maybe even let the default state be locked and a deadman switch increases the timeout.
Idk if that would just piss off the LEOs and make them wanna get retribution in some other way.
On top of which, I'm not sure how technically information can be distributed at time X but not be usable until time X + 6 months. Shouldn't I be able to beat out of you the password that will be valid, and test it on the smart contract, even if the blockchain won't accept movement based on that account for another six months?