I recall a great amount of gnashing of teeth over the F seat reduction on the A321s and it had little to do with the fuel stop problem. It was very similar to the reaction to the 757 reduction as well. I guess my only real point here, from a VFF point of view, is that great service in coach on CO may not be as nice as bad F service on US. YMMV.Show me a quote where I've complained about not being upgrafed other than as a result of SHARES being a POS!!
Upgrades are a perk not an entitlement. However when you reduce the number of F seats on an A321 to the point were you increase fuels stops and reduce the opportunity for high level elites to lose upgrades on Trans Cons then that is a reason for high yield elites to leave and that's bad for US Airways. I'm prefectly content with the % of times I get upgraded.
As for business practices, I'm not a huge defender of the Sandcastle. Improving customer service should lead to a better bottom line. I don't know whether the reduction in F seats has produced more Y revenue (from additional seat sales) or less (by driving away higher fare customers), but I'll bet the Sandcastle knows. But overall, you must admit that US management cannot be all that bad when they can almost equal the financial performance of CO despite having the worst network and the heaviest concentration of domestic flying.