Here is why I don't think we need rear-view mirrors in AHII...


This is what you get in Il2's FM2 with a rear-mirror...

And this is what you get with the dead six view in the FM2 in AHII

Not that big a difference. A rearview mirror can't make your empennage invisible, it basically saves you cranking your neck, which AHII's dead-six view already does.