Do you want the Empire to last? Even if it means for example, a change in dynasty, such as that of the Medes opposed to the former Septims, the Empire could effectively remain continuous. It appears that the Empire is experiencing much decay at this point, mostly having to do with the Thalmor invasion of several western and southern provinces, and the independence of a couple, like Black Marsh and Hammerfell. Currently, only Cyrodiil, High Rock, and Skyrim remain official provinces within the Empire, although the Imperials or citizens of the Empire may still have homes or outposts in other territories.