Liah

I imagine Val Salia in a few centuries as a kind of Ahnk Morpork type set-up

which ankh morpork characters do you imagine would be yinglets?

I've only read Guards Guards so I'm afraid my list is limited, but I really liked it because it had dragons in it

zhats a good one. gets you a good look at vimes, lady sybil and vetinari, all of whom are among my favorites.