» Thu Dec 08, 2011 4:43 am
There is nothing wrong with your line of logic; however, think of it like this: The Thalmor simply want to rule all of Tamriel, and their only real opposition is the Empire. As the Empire continues to pour more and more resources into Skyrim the Empire will continuously grow weaker as the war prolongs. (They've resorted to recruiting "locals" of Skyrim to fill the ranks of the Legion -- as paraphrased from an Imperial Legion Soldier)
It is stated that the Thalmor simply want to "prolong the war" where they could really care less about who the victor may be as the logic (I believe) behind this is that, after an extended period of war, both sides will lack sufficient resources to hold their own territories against the Thalmor allowing them to simply swoop in for the prize with ease.
Also, they choose not to support the Stormcloaks because of the peace treaty between the Thalmor and Empire, surely it would look bad if the Thalmor were caught doing this. Not to mention the possibility of hastening the end of the war.
Note: These are ideas I am led to given from the game so far; not complete fact.