I actually rather like BC approach of thematic sourcebooks. Radicals/Puritans dichotomy should be adressed, not only in terms of ideological struggle (and your preference of Big Fraking Hammers or Screaming Swords with Eyes), but with Influence and Subtlety mechanics, I would love to see some expansion, pros, cons and hints for Covert and Overt operations.
Maybe it could even open a can of worms, that is Abnettian (highly formal and organised) and Thorpian (cell and puirely reputation based and clandestine) interpretation of Holy Ordos.
And then we should get a Hereticus, Maellus, Xenos and Minoris books with lot of guns and things to kill them with