As this Idea Dump currently has no timeline as of yet, this sub hub will be here for a brief run through for the Splicer Factions that may or may not appear between the first two games. These guys are the same as other splicers, but are cosmetically different, and sport extra affinities (and perhaps weaknesses), along with some new powers. They appear in the same levels with their "non-believer" counterparts, and will treat them as such (KILL THE HERETIC!). They are:
The Fire Wardens: Vengeful Spider Splicers covered in flames.
The Saint's Guard: Malicious Wraith Splicers who follow a mysterious figure.
The Tundrideons: Icy Houdinis who abhor the "impure".
Saturnine wannabes? Not by a long shot.
I'd say more, but I can't think of anything else at the moment. Which one do you want to see first? I'll probably add more clans, but I still would like your opinion.