I hadn't thought about that; Ya'all have to buy a new uniform each time it changes?
I think the flightsuits are nice. They should just issue some made of stiffer cloth for formal occasions, to be worn with a leather bomber jacket, and those shades. THAT'S how I picture the Air Force. :-)
Of course, although there is alway a considerable period where one can wear either the new or the old uniform. Like is currently the case with the old "Forrest" BDUs and the new digital ACUs. The army guys can even wear the new tan "rough out" boots. (well new by Army standards, they've only been around since the early '90s) with any of the three utility uniforms. By all accounts the troops like 'em. One Lt. Col. got his first pair last year when he was TDY (for several months) to Southwest Asia, and now wears them most every day, even though he is back to the "forest" BDUs.
"The bag" is very comfortable - trouble is, only flyers get to wear them. I only know how comfy it is 'cause I got an orientation flight in a T-38 a couple of years ago. Yup, every time there's a change, they give us a drop-dead date for when we have to start wearing the new uniform. And the more rank you get, the sooner they expect you to convert to the new uniform. Apparently, it shows leadership or something...