Pete Schaefer wrote:

PHM (prognostics and health management) has been a big focus in the military
aircraft world in recent years. I'm hoping that some of this technology will
trickle down to us in the GA world.

One useful technology that keeps getting more real are self-powered
sensors that communicate via bluetooth or other wireless, so you could
just stick them on various places and not have to worry about cabling
and all those other points of failure.