I think the definition of 'political intrigue' is key. Is it backroom deals and espionage, or is it the broader politics of war, succession, and treaty-making? For the former, stick with Holly Black. For the latter, venture into epic fantasy that features fae-like beings. 'The Witcher' series has the Aen Seidhe and Aen Elle elves, whose politics are a desperate, dying gasp against human encroachment. Their court intrigues are bitter, prideful, and tragic. It's not a sunny court of light, but a fading, cynical aristocracy fighting for survival, which brings its own kind of darkness.