I agree that you have identified the key problems. 1 and 2 appear to me so unsolvable as to be indistinguishable from impossible, and any other issue I can think of is gated through one of them.
I have an extremely strong prior that any plan which requires an entire population to change their behavior at once is fundamentally wrong and not worth considering. Although I do note that plans involving a fraction of the population changing their behavior, or an entire population changing their behavior over time, are still worth considering.
I agree that you have identified the key problems. 1 and 2 appear to me so unsolvable as to be indistinguishable from impossible, and any other issue I can think of is gated through one of them.
I have an extremely strong prior that any plan which requires an entire population to change their behavior at once is fundamentally wrong and not worth considering. Although I do note that plans involving a fraction of the population changing their behavior, or an entire population changing their behavior over time, are still worth considering.