I would agree that that one standard is the way to go, that way one platform isn't deemed less important that another becuase it is flown by "substandard" pilots (i.e. pilots without the vision to fly say jets in your example). However to say that one airframe doesn't require the same visual skills as another is absolutely untrue. Your eyes are everything whether you are flying a cessna or a hornet, true the world is going by a hell of a lot faster in a jet, but everyday i'm up in my piper my eyes are constantly scanning outside the cockpit trying to make sense of what i'm hearing in my headset. At many uncontrolled airports some aircraft don't have and are not required to have a radio, not a time to be worrying if the other guy is having to clean his coke-bottle glasses with his polo shirt instead of looking for other traffic. And that goes for choppers too, ask one of the helo drivers about what it's like to stare through some night vision goggles in bad weather and try to put a bird full of troops on the pitching deck of a dimly-lit ship. I guarantee the grunts along for that ride don't want to be thinking that the guy up front is flying helicopters becuase he pulled a mr. magoo on the eye exam.
Tally-Ho!