And would completely remove the C-47 from the game.  If added, it would need to be perked.  It would be a perk plane that was a free kill.
How many people do you think would pay perks for it over a free C-47 or Ju52?
you do realize your claims are unfounded in any manner don't you? 
sm.82 
max speed = ~230mph
max alt = ~19000ft
range = ~1800mi
c-47
max speed = ~230mph
max alt = ~24000ft
max range = ~1600mi
the sm.82 was not designed to carry cargo, although a small number were modified fuel transports. the armament in the plane would be a very minor factor. nothing about the plane would make base capture any easier than it is now with a well organized group.