Charlie, Daas,
you are discussing as if there is perfect data to decide what is better and there is a perfect way to implement a policy. We are dealing with already too much delays due to complex rules. I am pointing you to a Gemora discussing water allocation along the river – we allow the first one to get more water “le darkei shalom” instead of creating an army of inspectors to maximize fairness.
Simplify and you will get less angry people in the street. Use the age, and then add a reasonable number of field offices in underprivileged areas. This is already done for testing. All “free testing” sites I heard of are in the poor areas.