Wrong...
There was armour plating in the B-17. It wasn't made of it, but it was there to protect the pilots, and some to protect the tail from a dead six approach.
Powered turrets negate the effect of the slip stream on guns pointed abeam.
Between all ten positions on the B-17, not only could every inch of sky be seen, but a pair of .50's could be pointed there as well.
Icons are there to make-up for the fact that the computer screen does not represent real life well enough to see, and make out, distant AC. The eyes of a gunner are the same eyes that a fighter pilot has.
Anything that a P-47 hits from D400 with 8 guns is no longer flying.
MG's are useless against a buff. In and out, no damage in between. Use a 20mm, very effective. 30mm: ouch!
Well, the ball turret does have a problem, but the Lancaster nose turret can traverse past 90 degrees. Besides it's .30 caliber MG's!
If you can get 200 rounds into the tail position you are a better man than I.
There are many stories of crewmen doing super human things after being wounded. (i.e. remaining at thier position after a limb had been clipped off by shrapnel.)
Gun positions do get damaged in AH.
Probably the biggest "realism" problem with buffs in AH is on the part of the fighter pilots. Every person that complains about buffs, I eventually see come cranking in from dead six, and it's a shootout. Piper right on the fighter, as he is flinging cannon rounds at you.
Stuff is flying of your plane. Engines are smoking. All you can do is hold the trigger down, FILLING the attacker with .50 caliber rounds hoping that the next one will be THE round that gets a wing or the pilot. After one of these attacks, the fighter pilot is dead, swearing on channel 1. The B-17 is critically damaged, the next fighter to come along WILL get the kill.
The reality: The Browning M2 .50 caliber round will peirce an engine block. It will go through wing struts. It will go through the armored glass in the canopy. The only thing sticking up above that engine is the pilots *head*. Some concessions are made for buff drivers, but few attacking pilots consider that a real pilot would not attack from such a futile disadvantage.
Wow... my longest post yet!

<S>IC
[This message has been edited by iculus (edited 03-13-2001).]