I think if you took any plane and really asked around you would find someone not happy about historical performance vs ingame play.
The Mossie may have got a raw deal, but take an Me109F2 out for a spin and see how that one anoys the gronards.
Would I like a faster Mossie sure, but then I would want the recon missions that go with it.
I would also like night fighters all I hope will eventually make its way into SOW.
One must remember that the original IL2 did not even have a player flyable Stuka and this feature was only introduced in patch 1.2
My guess why we do not have a decent Mossie is simple, lack of community interest, pure and simple.
It could easily have been modded by now and i am sure Oleg would have jumped at adding it in. but no-one did so..
Lets hope in SOW some modder takes an interest in the Mossie and for that matter all the lovely French fighters from the Phoney war