I can fluff out the background of the Dark Eldar soceity.
It's just an offer, but at least when it comes to knowledge about the Romans I can at least hold my ground, and mix it in with the Dark Eldar would be a challenge and exciting for me to do as I would then have something tangiable to hang my fingers on.
The areanas, style of rule, inner workings, dependency of slaves and how the armies are composed and so on seem so much alike the Romans, but I understand if turned down.