Every gadget should come with a usage counter. This data should be made mandatory on all gadgets. If possible implement power counter also. Making software counters is easy and could be implemented easily.
This could be used to see how much a particular device was used. And how much it would cost to maintain the device etc.
But would the hardware makers want to put this info out there.
May be if this information was available many consumers would buy half as many gadgets as they would know they are not using a particular device etc.
For me this feature could come quite hand just to track how much I am using a device, and are they worth the money I am paying for them.