It seems to me a more business as usual but with enhanced bio security for those who need to shield is the solution . The current approach will destroy our culture & economy.
Wont work. The majority of those with the infection dont isolate..No way would those younger people who do to work stay away from the older ones who needed to isolate. The problem isnt devising rules but getting people to follow them, particualrly when in the real world you have no possible enforcement.
Instead you have to play a statistical game. You close down an area. Many people's habits will be changes. Some wont change at all. Others will be very obedient. On average there will be less virus spread and its the average that matters.