I noticed on the Religion page that in Glantri there's a distinction between the "Chaos" gods and the (presumably Cthulhu-ish) Elder Things. I'm not sure what your goals are, but if you're interested in linking up, I'm quite happy saying the Chaos-religion is based on these Elder Things; it wouldn't affect the Black Peaks game at all, and in fact might give it a pleasingly Lovecraftian gloss - with the Trickster simply being the prophet/diplomatic face of this faction (what was it in Lovecraft - Nylarthotep or something was arguably more personable than the other ones, right?)
If you'd rather not, that's okay by me too.