An airline already tried that. It was called "Value Pricing" and offered 4 fares in any given market. Other carriers under cut it and it and it didnt last. Today with the glut in capacity and all the carriers going for every last cent, they would do the same if anyone tried to do a standardized pricing in any competing market.When are the airlines going to step up and offer a few different reasonably-priced fare options which do not screw them at the low end, and screw customers at the high end? If US did a trial run of such a fare structure in a heavily-trafficked business market such as LGA-CLT, I'll bet they'd find that their RASM on these flights would actually increase.