why even have a "veteran air defense" medal if one of the prerequisites is 250 global hours in a stinger? That should be the "veteran get a life" medal at that point.
I think you're missing the point. It's not that the awards are all meant to be had... the awards, especially those of higher distinction, are just that... awards designed to be given to those who have a particularly strong presence in a given role. It's not the character that earns the medals, it's the medals that are supposed to reflect upon what the character is and does. Frankly, if you're spending inordinate amounts of time going out of your way to earn medals, I'd think you'd be having less fun than just playing at your own style, which leads me to my conclusion:
It's like a portfolio, not a "collect 'em all!"