Thanks for the detailed comparison.
I agree with your points on UA (don't have enough US experience to comment) -- however I'd describe the employee/customer interaction as being minimal on United when compared to Continental.
It's harder to find agents, they're fewer GAs to board flights, etc. but I've also found the various automated venues (Mr. Chickin, the website, etc.) and the phone agents to be far more capable then CO ones.
Booze isn't that big a deal for me, and when it is I have an ample supply of RCC vouchers, but I do appreciate the fresh fruit and vegetable options offered at the RCC. Those offerings coupled with the Pepperiage Farm and other assorted goodies are way beyond the PC's tired offerings of packaged cheese and micro apples.