Was IL-2 2001 pretty much perfect when it came out....For it's time I would say 95% of perfect. It's lack of bigger German bombers was the only let down I think. The Stuka came along in an early patch with the F4 and Emil but never a 110 Heinkle III or Ju-88. The only other thing I can think of is it was entirely the Russian front witch wasn't a problem for me but may have been for some who wanted to fly American or British aeroplanes and Western arenas.
An old review
http://www.gamespot.com/pc/sim/il2sturmovik/review.html