Not so much a NEW idea, but using an existing tubular pick.
I thought of having the feelers have an arc in them so they curve away from the pick in the middle of the feeler. Same type of tension collar, but a little higher up the pick body. You would set the feelers so they were in the 8 position (not pushing in the pins at all).
then by compressing something around the arced feelers, you would simultaniously be pushing in all the pins at once. As a shear line was hit, that feeler would stick on that end, and any further squeezing on the arc would push the other end of the feeler through the collar.
Make sense to anyone?