That said: most of it I like, but the idea of demons as a mechanic for player spellcasters gives the wrong impression for the game. I see its place in the genre, but how can I tell friends of mine (who I'm proud of having, as they're good people) who happen to be on the conservative religious side, that the game isn't what the wackos say it is, when this is part of it?
Options for non-demon entities will be an important part of this process, minimum.
Priests: The dagger-waving priests mentioned above are just sorcerers, eh? Not clerics. Read the books: all wizards call on outsiders for help, some of them are "priests". Mitra aided Conan in that story (the pheonix on the sword, I think it was), and he had his followers; contrasted to Set and the Stygians, or Elric and Arioch. Cleric-style characters are in there, but they aren't representative of all "priests".
I'd argue that, while Cthulhu is popular, the CoC game does make use of the Elder gods as opposed to the Old Ones, right? ie: strange entities of law vs. the chaotic Old Ones, entities helpful to PCs.
The game likely won't have 3e sorcerers, then. They're not really part of Appendix N. Maybe I can call my Wizard a "sorcerer supreme", finally!
Anyway, as part of the fiction is Law vs. Chaos rather than the D&D alignment wheel; and the popular CoC mythos vs. the Elder Gods (something GG knows a bit about, sure), with REH as an example, I wanted to see what's going on with Alignment and Religion.
Do my wizards need to get it on with the forces of Chaos, or are there less repugnant options for them? Like that priest of Mitra in the Conan story mentioned, that sort of thing. Are there gods vs. demons, or is it going to be more about abstract supernatural entities?
And: if the expectation is no alignment except in magic (which I like a lot, and fits the literature), what is that going to look like?
Will the REH vs. HPL debate, regarding barbarians vs. civilization have an impact (the noble savage? The noble scholar?)