My fiance and I are working on some fluff for her craftworld, Ry-un Din.

Ry-un Din is a craftworld dedicated to the preservation of Eldar traditions, history, and lore, and as such all citizens are expected to join an Aspect shrine at some point in their life. All the troop choices are therefore Dire avengers. and there is a disproportional amount of aspect warriors in the army even the pilots have their own aspect.

Being obsessed with the history and lore the craftworld also has a group of actors and storytellers who keep the history of Eldar. For all intents and purposes these play as Harlequins.