Great idea. Am in favour of something, however little, getting done now.
When I lived in Amesbury (and when I visit family there now) I often wondered how many tourists had been killed by stepping back into the road with their cameras!
People in Shrewton may kick up a fuss over losing that road as it would add a few minutes to a trip to Salisbury (which, for an ambulance, could be critical) - but on balance, I'm in favour. Most people could easily travel between Amesbury and Shrewton through Larkhill, or via Airmans X.