Surprisingly I agree a bit. He should be channeled at the very least. Some of the sketches I saw associated with the project were also too 'fantasy' in the sense of the men's clothes. I think Lovecraft films should have very grounded down men facing unimaginable things -- not men with bizarre clothes and stuff like that. That was a strong aspect of many Lovecraft stories. Standard, middle class men, with their lives led by reason and thought, going against things that challenge their knowledge and make the ground of their mind shake.
I of course do not expect a 100% faithful adaptation of Lovecraft's story, but I think there are some key aspects to be mantained in order to keep the vibe. It's not the same thing as Hellboy where where we have many Lovecraftian concepts, but the film is allowed to have Hellboy's general character attitude and other things because it's an independent work -- there are some great winks to Lovecraft of course -- it's its own thing.
Mountains is a full-blown adaptation and should mantain some important things from the novel. I really don't understand the fixation on the creation aspect, as another example. Lovecraft never gave it any importance; it occupies two or three lines of the novel at best. It's not even explicit or made certain -- just lightly suggested. That's because it is not the focus of the story at all. And the fact Prometheus went all out with creation themes is all the more of a reason to just let that idea go.
