Trouble is, then you could reasonably quickly generate a Spitfire factory and turn out dozens per day. Today, it takes a huge amount of time to build ONE Typhoon let alone a hundred. And then you could replace losses in aircraft and aircrew relatively quickly - how long does it take to train a Typhoon pilot? Oh, I also forgot, we don't have navigators any more...
You would no sooner complete the generation of the first Sqn when the hoards in their thousands roar over the horizon.
And what are you going to do to counter the submarine threat?
Anybody else see a problem developing with the slashing of the Forces at a time when Russia and China are building theirs?
FJJP