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.

Every Empire falls eventually, but the Imperials should remain in full control of Cyrodiil. Maybe allegiances with other provinces could create an interesting new story. With regards to the Aldmeri Dominion situation.

I hate the empire, the stormcloaks and the thalmor so it's a tough question.

Second question there is: "Should the Stormcloaks succeed and claim the Empire for themselves?"
The stormcloaks are not trying to take over the Empire, they just want to make Skyrim independent.
I suggest you to change that question.

As for my opinion, I would like to see the Empire go down (the situation in Tamriel would be even more interesting).
But as long as it stands, I will support it.

Perhaps a new faction then? Nirn is a big place after all.

To be honest I also like neither.

What are your thoughts on this?

The empire is nice and lazy, cmon lets leave them like that. seriously who would want religious nords on top ruling everything? bunch of pompous elves isnt better either. at least the imperials are tolerant.