Okay, recycling time (as opposed to "new suggestions") ...
I really liked the 'Missed by this much GB' concept ... but it could be expanded. Along with F-23 instead of F-22, it might include too-late-for-service types ... say, operational Spitefuls or Tempest IIs above the Rhine in 1946?
Other oldies but goodies were a 'World without Superpowers GB'; 'Engine Swaps'; 'Ploughshares into Swords GB'; 'Double 'Em/Halve 'Em GB'; and, going waaay back, 'Empire Lives On GB'.