Cthulhu Mythos & Yaqqothl

With Carcosa and Realms of Crawling Chaos already on the market and Swords Against The Outer Dark coming out this year (not to mention Xothique), the inclusion of the Cthulhu Mythos in my Yaqqothl Grimoire is proving to be pretty difficult. The point is, I don't want to come out with yet another iteration of the same stuff, but I want Yaqqothl to include these creatures and still be playable using nothing more than a ruleset and some funky dice. So, what should I do? So far, the only idea I've had is to include either new lovecraftian fashioned creatures and/or creatures and gods created by authors other than Lovecraft. Any ideas?