Continuing my way through Victoria Goddard's work - and I really like the way she lays the seeds for a plot twist. I'm currently working through her Greenwing and Dart series and information on and skills of one of the main characters that was first introduced in book 1 and was one of his obsessions that get mentioned in book 2, just played a really pivotal role in book 3. So nice one there.
She also must have done a great deal of planning on her world building to get some of the intersections she does. These books, and the Hands of the Emperor books are set in the same world, but different parts of it, though all connected through some major events and she does a really splendid of job of setting up "aaah so that is the other side of what was happening there" moments. Or just having characters from one series encounter characters from a different series in transit - it is amusing to the reader who is in the know. She also has a nice touch of humour - not slapstick or large and obvious, but smiling humour and observation of people and absurdity.
Having said that, I am going to very cryptically say that the fight scene at the end of book 2, Bee Sting Cake, is really, really funny. Genuine danger, heroism and skill, but is not the classic fantasy duel.
She also has her characters interacting with their relations and there is the connectedness of society in there, for good and ill - even though at times there is a "quest" feel to some parts of the plots, they are never in isolation from the wider world.
Oh and this is fantasy with magic, in a vaguely 18th century setting.