Not sure if we can post book-only things here, but if so, there's something I recently noticed for the first time in SoD (very minor spoilers):

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When Xykon sees the rift for the first time after Lirian's Gate is destroyed, he remarks that he thought it would be 'swirlier', and we get a couple of demon roaches making Star Trek-esque remarks ("Detecting a disruption in the spacetime continuum, captain!"). Until now, though, I hadn't noticed that the roaches actually get little Trek uniforms for that panel. Kinda neat.


Not a major revelation, admittedly, but no one said it had to be.