Ken,

The Delta comment in your original post seems to have gone unnoticed. I am also a loyal Delta flyer, and I have tried on at least four occasions to book long international trips as RTW using Delta and its RTW partners, Singapore and Swissair (yes, still!). Unfortunately, it's difficult to get to lots of desirable places. And Delta's RTW arrangements are very strict about no upgrades, even on Delta flights, which makes no sense to me. Last but not least, in four calls to Delta's special RTW desk, I have encountered rude and uncooperative reservations agents. I can't explain it, I just report the experience!

In summary, you would be wise to go with other airlines.

Bruce