One step at a time but I'd imagine the idea of 'safe social distance seating plans' will soon come up once TV viewing figures begin to drop off as the armchair fan begins to realise there's an essential ingredient lacking.

3,000 at Notts sounds like a good estimate.
If you alternate rows, that cuts ML from roughly 20k to 10k, then you've got to have seats either side empty but families will be able to sit together, so 3k should be reasonable. It would look crass to push for it now but once we get going again I'd anticipate clubs will support the idea as a life saver.

People would have to be sensible though regards the problem highlighted by Chicken Balti Pie.