Most people flying these sims are already waaaaaay ahead of the average WW2 pilot when it comes to intel on the enemy. I'll bet most Spit pilots from the BOB had only the vaguest idea (based on intel briefings, ie 'guesses' until one was captured, tested, and the info passed on to squadrons in the field in a clear and comprehensible package) of what a real 109 could actually do, or how it was operated. Lets maybe leave the super detailed damage analysis alone, ie preserve at least a teensy little bit of the mystery
Also, it would enable countless 'I saw an arrow through his engine and nothing happened' threads, a la Steel Beasts (an excellent tank sim, where AAR damage reviews include shot impact lines and damage done). I agree in some ways, it was cool in IL2, but it seems we've all come to expect (superhumanly) more comprehensive damage models nowdays....
IMHO.....