As far as the metric/feet call, I have flown (I’m in the USAF as a Loadmaster on C-130's) in over 40 different countries and nearly every country with the exception of former Soviet(which uses the metric system, all use Feet for altitude, Knots Indicated Airspeed and wind in miles per hour for air traffic control. I know that this is a "historical" game, but as long as you know the parameters in which you need to keep the aircraft (i.e. don’t let the airspeed in the 190A8 get below 300KIAS) what does it matter which unit you are using. I there is a strong push to make the aircraft as accurate to the historical flight model as possible, but can we really ask the design team to rewrite all the code in the aircraft performance. The nice thing about keeping all the aircraft in the same measuring system is it allows someone like me to fly and compare the aircraft without a bunch of conversion. I may be way off base here, but those are just my thoughts..
SkipNutz