All those sound pretty good really, especially the one about the Thalmor. Hmmm I've been thinking of maybe a plot concerning one of the Daedric Lords, but it would feel too much like Oblivion/Dragonborn/Online. What you said about Ulfric pushing into Cyrodil, that does seem plausible since I figured Ulfric being a man of ambition would think of such, and with the death of the Emperor due to the Dark Brotherhood, the Empire would be ripe for the plucking, depending on if the Dragonborn did or did not kill Amaund Motierre at the end.