I realize how strangely the glass nose of the Blennie was designed. Anyone knows the reason for this?

Another interesting detail:

http://en.wikipedia.org/wiki/Bristol_Blenheim

apparently the bomb doors where not opened automatically but by the shear weight of the bombs when they were released and falling on the doors that were kept closed by bungee cords ... reduced bombing accuracy. I wonder if this is simulated in the game.