Unfortunately, you seem to be in the minority on this.
That's fine. My screenwriting professors wouldn't have had it any other way. :lol
One especially always drilled into us keeping the script free from clutter and unnecessary moments, to prevent confusion or later unnecessary exposition.
For me, "JARVIS (AKA the most advanced AI in the world) has been working on this" or "Secret agent man finds secret agent gun on secret agent magic flying boat" are both complete explanations. If those other moments are there to help explain those moments, exposition would be required...
Stark: "I thought they might have some decent security, so I had JARVIS whip up a little something extra for their systems" *He examines a duplicate button-sized bug* "I've had JARVIS working on the problem since I hit the bridge"
...then again, this is a man who learned complex theoretical physics overnight, so is it required? Not for the story. The fact that he is the smartest man known to man can explain just about any plot devise you throw his way.
Or exposition for the eye scan...
Coulson: "We keep this little guy locked up nice and tight...so, I don't even know what it does..." *KA-STABBED*
Do we NEED to know that the gun needs biometric access? Nope! Do we need to see Coulson actually get the gun? Nope! We see him arrive with it, so we can assume he got it from somewhere. It's like how after the 3-way battle in the forest, no one explains how they got aboard the ship or got back to Loki. The fact that they made it back to the Helicarrier is enough, the audience fills in the rest.
Once again, the majority says that you guys are right. So if that's the case, I take issue with the script/editing.
Otherwise, I'm holding out hope that maybe, just maybe, we might get something out of those moments...that said, I'm not holding my breath. Though how cool would it be?!
/End Pedantry
-Nick