JUGs point wasnt to remove F3 from all of the aircraft that currently utilize it. Just limit it by not allowing the guns to fire while outside the cockpit. F3 is rampant in the DA in fighters and JUG's summation affects that arena. Let's see if we can get JUG to answer one last question:
JUG, if you and I went to the DA to 1 v 1 in say, JUGs...I will use F3 and you can't...do I have any advantage on you and if so, why?
Changeup
Well Changeup I would destroy you in a JUG

! The advantage would be in your "out of plane" perspective. The ability to have "the whole picture" if you will. Example, say I was diving on your 6, and you were trying to set me up for the overshoot. In F3 you would have a clear picture of what I was doing as I past beneath your plane and in front giving you an unobsrtucted picture of me for your guns solution. Using this example if you were not in F3 you would have to roll to get eyes on me. If you dont have to make this roll the advantage in timing and E retention can be significant IMO.
Now using the same example only I have F3 on and you do not: I am diving fast from your hi6 I have an excellent view of your plane as you try to set up the overshoot, normaly in this situation If I stay fast I will have to time my shot as you will be under my nose and not visible to me, a simple "rudder kick" by you and my guns solution is defeated as I would not see this to react to it. In F3 you could do a "song and dance" beneath my nose and I would see it easy, able to adjust and get the kill. I am not good enough to claim there would be absolute advantage in a duel, although common sense tells me YES! F3 takes the guess work out!
I would be inerested to see 2 outstanding players with very similar skill try this out in the DA.
Grizz and 2Bighorn would be prime candidates for this. They are both awesome and I would think they would split victories in a 10 fight match 5/5 maybe 6/4 so ANY advantage one of them had would show up in the victory count I believe.
Anyway in my mind there is no question about the advantage F3 gives someone. Is this advantage enough to overcome the advantages say a corsair has over an il2? NO but it is an opportunistic advantage. I also think at times it is the only thing that helps "the vulched" to kick a few of the "vulchers" in the crotch so removing it would be a toss up for me.
Now in regards to ground attack and F3, well that is entirely a whole new matter.
For those who say F3 is to simulate multiple crew members Hmm, last I looked the il2 didn't have eyes in its belly

With the lame vulchfests that frequent the MA. removing F3 would be mostly bad IMHO!
JUGgler