I don't want to rain on anyone's parade and would love to get back to Priestfield myself. It's way more difficult once you start to break down a possible way of admitting fans. Sepaarate, safe access would necessitate opening all four sides with the attendant extra cost. Stewarding levels would have to be higher than normal and that's before we ask the police about their invoolvement and the queues snaking round the ground.
The single, biggest obstacle would be the experience on offer. Turn up in an agreed time window, no congregating in any numbers around the ground, a slowly moving queue, single file to your seat under supervision, no one really near you, managed toilet breaks (I don't see how that even works), a carabao cup type atmosphere and the whole, dreary entry protocol repeated on exit. Whatever crowd limit was imposed we would soon start to fail to meet it.
Much better to hibernate live football until we can revive the real deal, hopefully sooner than now seems possible. I'd rather watch "real" istream football than ersatz Priestfield and in the meantime we could be looking at new models such as pay freezes, reorganisation and the rest. Failed experiments leading to the slow death of our football club and others is my real fear.