I too wish CO would have an extensive Aisan route, espcially to CN. I surely hope after the CN entering the WTO, She will allow more american based airlines to fly into her cities. However, my wish will be hard to come true, because Beijing is nortorious for changing rules on the fly.
As for LAX,SFO, these airports are great if you live in the west-coast, try coming back from an asian route to DTW,IAH or EWR from SFO, you won't be home till midnight I gurantee that.
Time is the main reason that I choose NW when I fly to CN since the DTW-IAH will get me home before dinner time
Keep our hopes up