After making my arguments I just have to say I am blown away this morning to see that United has published H fares on Travelocity at $630 total fare for weekend travel SFO-LHR over the next few months.

This is hundreds of dollars lower than any H fare I recall to Europe in the last few years and the best thing I've seen from UA out of the West coast lately. I certainly would rethink my argument of not buying a higher fare if this became the norm and I could buy an upgradeable fare for a mere $200 more than the cheapest fare. That makes the H fare SWUs a reasonably priced option.