My players are extremely dissatisfied with the 2E playtest rules (too much like D&D 4E) and parts of it don't make much sense to run except as a stress-test. However, I like the Aucturn Engima/Dominion of the Black themes and am trying to piece together a short campaign of 1E with those themes, ideally reusing/adapting a lot of content since I'm pretty new to GMing and it's much easier to change around details to fit things together than to make interesting ideas from scratch.

But I'm having trouble finding what published material connects to it. Other than Doomsday Dawn, I know Entombed With the Pharaohs (and to a lesser extent The Pact Stone Pyramind) are connected, and I've been looking at the Strange Aeons adventure path. Where else should I be looking?