I hate to beat a dead horse but your argument only works if once I get to CP I get unlimited systemwides ... and I don't think that will happen. I for one got so many of those stupid segment upgrade coupons that I couldn't come close to using them.
I have completely accepted my fate as to the receipt of the systemwides but I would think that USAirways would recognize that there is a flaw in rewarding those that arrive on the CP scene this year at a greater level than those of us that have been CP for some time.
I will probably not even bring this up to US Airways as it isn't that important to me. When I want to upgrade I will just use the miles and do it that way.