YMMV / The Age of Dusk

• Creator's Pet: The Eldar. While they mostly die off in the previous work, the immense focus on Phoenix Lords (with them depicted as effortlessly defeating Primarchs, and getting three sections when most other parts of the canon barely get one) puts them firmly in this spot for this story.
• Hilarious in Hindsight: It's revealed that Vulkan created a set of new and improved Astartes to supplement the ones that have been lost over the past ten millennium, which are superior in many ways to the originals. Fast forward several years and it turns out that Roboute Guilliman commissioned his own set of Super Space Marines, which are finally viable..... during the 42nd Millenium.