Thanks for your suggestion, but at this time the NSA cannot allow this change.

Mics listen for voice commands all the time and some cameras can be activated without their LEDs.

Haha! That gave me a good laugh.

"But the switch will compromise its water tightness like the headphone jack does!" - every mobile sycophant.

Or worse: It might add 15 cents to the BOM!

Magnets and reed switches? Crazy talk!