Vetinari was accompanied everywhere by his female assistant, a woman in a black Victorian housekeeper's dress and a white apron. I'm very very familiar with this person, am sure I came across her in my recent reading, and have no waking idea who she is. But I suspect she owes something to Hinamori Momo-- the more so because incandescens was telling me that I ought to write her weeping at one point, and I wasn't able to follow her argument at all.
There was a Vimes who was, well, not Vimes. Again, a very familiar archetypal character, young, brash, possibly D'Artagnan (which makes Vetinari Richelieu) and also someone I ought to know and don't. But most puzzling was the antagonist, a clever foppish blond young man who had at very long last seen the error of his ways and was now on Vimes and Vetinari's side. I know that character too; I come across him everywhere; and I can't put a name to him. Closest I can get is Asagi in Basara, who has the requisite early villainy but none of the clever wit.
But most clearly I remember not-Vimes saying in frustration to foppish villain, "How did he do it to *you*?-- he being Vetinari and it being 'seduced and dazzled us into entering his service'; and young fop giving a 'well you know' shrug. Would have liked much more of that, but then I woke up.