It's obviously more of a sprinter thing. No one expects Lagat and Lomong and others to wear these uni's for anything higher than 400m. Even there, you may see a leg sheath, but no full arm covers. Ease up, Nike has some of the best sport scientists in the world. I didn't hear this much complaining when they introduced the Victory and the mambo or whatever it's called. It's the same principle people: lighter is faster! Aerodynamics are just as important when you're trying to achieve maximum velocity!
Show how callused you are to technology and go back to racing in old Sand-Knit jerseys and full poly shorts from the 70's. While you're at it pick up the latest pair of Saucony Jazz trainers from 1978. They'll be in your "casual" section at a local shop.