While it would not be cost-free against law enforcement (as they could charge with contempt/destruction of evidence and so on) I hope as this sort of thing happens more often it pushes Apple to respond with a native coercion code system rather then requiring a jailbreak. Security has been improving at a nice clip in the last 5 years after significant stagnation, and bringing coercion codes to the general public seems like the next straight forward, logical improvement. Apple seems to already have the basic system level infrastructure in place since they store and register each of the five fingerprints separately and fire off appropriate different system events, which is why a jailbroken device can have an imperfect but reasonably effective one. Apple though could make it more user friendly, and have it be not just for Touch ID but also using a PIN.

While law enforcement gets the most press, this is and growing threat from non-state actors as well as mobile devices become ever larger gateways to the public's private lives and finances. Apple would do everyone a service by blazing the trail here and sooner (iOS 10) rather then later.