I'll admit that with the novella tease of Silas Marsh, the obvious target is Innsmouth/Yha-Nth'lei. (And having heard about Stross's Laundry books, I do hope we get to hear that Yha-Nth'lei is alone among Deep One cities in its desire for conquest. I'm not holding my breath, though.) Nonetheless, while Cthulhu (and, by proxy, Yog-Sothoth once again) is probably going to be popular, I wonder what other Great Old Ones could make for primary antagonists.
I'm just not recalling who the major ones are, beyond Cthulhu and what we currently have, are. And I'm not even sure who the current expansion cycle antagonists are, beyond Yog-Sothoth for Dunwich and Hastur for Carcosa. I'm guessing Nyarlathotep for Forgotten Age and Azathoth for Circle Undone, but that's it. While there are two Great Old Ones I've developed interest in--Abhoth and Y'Golonac--that's mostly because their Arkham Horror 2e mechanics were interesting to me, and for all I know, Urmodhoth is supposed to be a scion of Abhoth.
So, for those with more Mythos knowledge than me, who (besides Cthulhu) should be next?
