As a Member so not "Officially" representing Groundspeak, but simply voicing my own personal opinion, I am free to express a opinion.
And that is I would like to see a system put in place, where 6 months after a cache has been Archived [or whatever name is used] from "All" Listing Sites. A volunteer goes out to check that the container has been uplifted. To this aim, a Points system is set up, 1 point for physically going to check, where a Owner has not confirmed that the container has been uplifted. 3 points for actually uplifting a abandoned container.
At the end of each 12 month period, individuals scores are tallied, and the person with the highest amount of points per Region and for the UK as a whole is awarded a Badge for their profile. And possibly funded by donations, a Trackable, or other Geocaching related prize.
This is a Project that would be suitable for the GAGB to run, with Volunteers co-opted by the Committee, to run the project on their behalf. If the GAGB was to take this one, I'd personally be happy to make donations to fund prizes such as Trackables.