You're way off the mark, Grits.
I find external views extremely useful as an early warning system, since we don't get bandit reports from all the gunner positions.
There's an alternate to F3 also:
In B17s and B26s press the 2 key then the F3 key, then zoom all the way out.
You can bend your joystick and look up, down and all around without disturbing your heading or climb settings.
If a dot "bogy" becomes a "bandit" slew your aircraft between your eyeballs and the Bandit, jump to the proper gunner position and he's automatically lined up in your gunner sights.
What you have done here, in affect, is gone outside via a gunner position.
This is very useful when under threat from 262s and 163s or any multiple threats.
Good luck,
Eagle, Group XO
327th Steel Talons