Bolares
Legend
I think an even bigger, probably more fundamental, divergence here is in the last sentence. Keith Baker has been pretty explicit in his statements that PCs are supposed to be the ones to create the cool stories. In general, there's a dearth of NPC factions that can ally with the PCs in order to accomplish their goals, or that are, in general, actively working to oppose the setting's big bads. Eberron's general design expectation is that the setting does NOT exist in some sort of stasis; if an NPC starts a world-destroying plot, there's no good guy group opposing them to stop it, and only the PCs can stop it form happening.
More so that most settings, Eberron is actively designed with the idea that PCs won't stay within the boundaries of the setting. The mystery of the Mournland is MEANT to be solved. Vol is designed to be opposed and eventually defeated. The Last War is supposed to start up again (or possibly, Galifar is meant to be reunited.) il-Lashtavar is supposed to be replaced by il-Yannah. Riedra should be liberated. The settings books don't tell you how that's going to be accomplished because it wants the players and the DM to do it themselves.
That's what I was trying to say, but in my lack of practice in writing in english made it harder. hahaha