You're missing my main point:
IF NOT FOR ULFRIC, THE EMPIRE MORE LIKELY THAN NOT WOULD HAVE DRIVEN THE THALMOR OUT. HE'S FORCING THEM TO WASTE THEIR RESOURCES FIGHTING HIS DAMNED REBELLION SO THAT THE THALMOR DON'T SWOOP IN AND [censored] HIS [censored] AFTER HE CONQUERS EVERYBODY THAT DISAGREES WITH HIM IN SKYRIM, AND DRIVES OUT EVERY NON-NORD.
So you think. I disagree. I'm fairly convinced that Skyrim can stand on its own, especially considering that almost all the might of the Empire now comes from Skyrim. It's time to start putting that to good use, instead of standing idly by while the Thalmor slowly tighten their grip and drag off your family for worshipping the Divine who's stopping the End of the World and the Thalmor's ultimate goal.
The Empire, to keep Skyrim from getting ripped to shreds, has to help the Holds that don't want to be controlled by Ulfric fight him. Which wastes MASSIVE amounts of their resources, which could be used combating the Thalmor.
All those resources should be used to fight the Thalmor, I agree. A shame that they (EDIT: the Empire) gave up on that already with their treaty, eh?
And Hammerfall is nowhere near an accurate comparison, because they were all united. Ulfric is trying to usurp the throne, which is obvious in that he killed Torygg, who respected him more than any other living man.
The funny thing about this is that he could have denied the challenge and a new moot would have been held. Don't hate Ulfric for doing what was necessary. And believe me, Hammerfell
is a significant part of the equation. Because of their resistance, the Thalmor cannot risk invading Skyrim without spreading their forces thin.
It's evident that Skyrim is far from united under Ulfric, because half of Skyrim's Imperial Army is composed of Nords. And Nords are stationed in other areas under the Empire's banner.
And you think that when the Empire is driven out of Skyrim, they will choose to continue fighting for a foreign power against their homeland?
Ulfric is dooming Skyrim to ripping itself apart, just preparing itself to get ripped apart by the Thalmor. He should have waited until the Empire could have set their plans in motion to drive the Thalmor out. Which was very soon, judging by what their fighting the Stormcloaks with.
So you think. I disagree. Also, it's pretty obvious that the Empire is fairly incapable of handling the Stormcloak rebellion. If not for the intervention of the Dragonborn, the war would have dragged on for
years. So much for having the strength to fight the Dominion; they can't even garner the strength to conquer a rebellion.
EDIT: Derp, the strength to fight the Dominion*. I don't think the Empire wants the strength to fight itself.