Strategy question for the experts. A friend of mine flies SBA-DCA roughly 3 times a month for work. He always flies US and earned about 170,000 in 2007. Should he diversify a bit? It seems to me that with so many miles flown it might be worthwhile to have status on several airlines (and not have all of his proverbial eggs in one basket). Problem is that the connections out of SBA aren't great. I see that AS has a pretty good connect through LAX.

Any suggestions?