Regarding theme, it's probably little comfort to the Guild since he's dual faction but I've long adored Lucius. Both of his Keywords are neat and flavorful, though I don't like the sculpts for False Witnesses. Never actually played him and he's not repped in my meta, but the new Title feels like another targeted push from Wyrd to get me to pick him up despite the relative investment.
Best Lucius lore moment: Kitchener contemplating yanking his mask off and parading him around HQ, to show Lucius he's not as clever as he thinks he is.