As I posted in another thread, from a US perspective, anything along these lines would take years to implement, and many states would in the end not go along. By the time it was implemented, COVID would be a thing of the past. I think a lot of countries are in the same boat. At this point, I think the best course of action for everyone is just wait for the COVID rates to get low enough that it no longer makes any economic or common sense to try and implement this type of plan.