Can I just check if I have understood what you are asking. You seem to be saying would we be better off if we pull out of JSF (which is under development) and design a whole new aircraft from scratch, but based around the existing Typhoon. As naval aircraft are very different from land based types, we would have no idea of it's weapon carrying ability or weight, or it's manoeuvrability in naval form. What percentage of the new Typhoon do you see as using the same parts as the existing Typhoon, and do you see Britain going alone in it's production?
I'm only asking as I'm curious as to your own thoughts. If I were being troublesome I'd probably ask which service you feel should fly it from carriers