I'm sure the FBI would like to minimize the "work asked of Apple". Ideally, they'd have a system to: 1) Identify target phone and obtain warrant to search. 2

I'm sure the FBI would like to minimize the "work asked of Apple". Ideally, they'd have a system to: 1) Identify target phone and obtain warrant to search. 2) Invoke Apple<-->FBI-specific api to initiate OS image generation to the specified target phone. OS image would be automatically downloaded to target phone. 3) Once downloaded, OS image would present FBI-specific API to allow exfiltration of any desired data. This might not violate the 4th Amendment ("The right of the people to be secure in their persons, houses, papers, and effects ...") because they'll have a warrant, but IMHO it's a clear violation of the 5th ("... nor shall be compelled in any criminal case to be a witness against himself ...").