Which brings us smartly back to jolly old F.37/35 again!;)
I suppose it must have been a better idea to run with the higher performing and available for production with less changes Spitfire (over the Defiant) with the cannon wing.

Not sure if you’ve seen this thread from a week or so ago, http://forum.keypublishing.com/showthread.php?t=113822
It contains good info on the turret idea and the various Defiant proposals.