Just did the initial ticketing on an RTW award, in Business from Delta so I thought I'd comment on the experience. Took about 1:45 on the phone with a very pleasant woman searching for flights.

BOS-AKL-"surface" sector-SYD-NRT-KUL-BLR-surface sectors in India-LHR-a bunch of EU surface sectors-AUA-BOS in Business or First the entire way (amazingly didn't get an RJ flight on any US segment!)

Of course the routing could be better (I connect in Seoul 4 times with one forced overnight, and KUL-BLR [1788 miles apart] is KUL-ICN-CDG-BLR [13297 miles]), but I got quite close to my targeted dates with pretty short notice (the initial BOS-LAX-ICN-AKL leaving in 10 days.)

Unfortunately, despite all segments being e-ticketable, it's long enough that it has to be handwritten so I get to make a trip to the airport to ticket this beast. And it still has to go through the rate desk, though the Delta rep did check longitudes where there was a question (turns out Aruba is almost exactly 1 degree east of Boston, giving me a legal stop there!)

All in all though, a very pleasant experience, and much easier than I expected; none of my dates were more than a couple days off from what I requested, and I'm pretty flexible so I don't mind. Best 220k miles I've spent, I'd have to say! (And funny that changing to a first class award for 280k would have done absolutely nothing to any flights; business is definitely the way to go.)

Segments on Delta: 3
Segments on Korean: 7
Segments on Air France: 4
Segments on KLM: 2
Total segments: 16

Actual non-stop miles: 32080
Total booked miles: 51703

Oh yeah, and they told me they can indeed do Aeroflot ticketing now for RTW (and logically other awards as well.)