I have had no trouble incorporrating Age of Worms into Eberron, eveen with Keith Bakers notes...HELLO you are the DM, act like it for goodness sakes, If you need to fit stuff in, then by all means put it in there...add warforged and dragonshards...incorporate the Dragon prophecies into the Kyuss prophesy. Make little changes here and there to give it the flavor it needs...Use your imaginations, it is not a hard concept to grasp. That said it would be nice to have the Download supplements more often, waiting from Nov to Feb for issues 129 and 130 was just annoying. Looking forward to 131's supplement.