Good list. It does not include "Silk Roads" by Frankopan, which I agree with. That's a good read but much more a history of world trade (hence the plural) and strangely western-centric. I saw strangely because in the introduction Frankopan says he wanted to write a history from the point of view on central Asia, but its not that at all. Dalyrymple's "Golden Road" succeeds at Frankopan's objective and I found it much better in general. I don't want to sound too negative on "Silk Roads" but I think the title is subtly misleading if you want to learn about the trade general referred to as the Silk Road.
Yes, Frankopan's Silk Roads was a disappointment to say the least, I was really expecting an enlightening history of the middle east, starting from the early interrelations between the various civilisations (Egypt, Babylon, Harappan) and the progression through time (for example mentioning the Periplus of Roman adventurers into the far east). Good histories of China (Goldman/Fairbanks), and India (Keay) had whetted my appetite, and I think I'll need to read Dalrymple to be fully sated.