So... why did the elves go homicidal crazy in the first place?
Well if the other games aren't set or partly set in Skyrim then it wouldn't matter much.It's interesting in how they will deal with these choices in future games.
And if the Stormcloaks succede in breaking Skyrim away from the Empire, it further weakens Tamriel's ability to stop a Thalmor invasion as Skyrim and the Empire wouldn't be working together very well if at all. Although unless they bring in DLC about that it won't affect your character in Skyrim.
http://elderscrolls.wikia.com/wiki/Hammerfell
4E 175 — Hammerfell leaves the Empire after rejecting the White-Gold Concordat.
Titus II renounces Hammerfell as a province of the Empire to preserve the treaty after the Redguards oppose ceding their lands. The Redguards see this as a betrayal, and a lasting bitterness between Hammerfell and the Empire is sown to the delight of the Thalmor. Hammerfell continues to war with the Aldmeri Dominion for the next five years.
4E 180 — The Second Treaty of Stros M'kai is signed.
Having been fought to a standstill by the Redguards, the Aldmeri Dominion completely withdraws from Hammerfell.
What do you mean? The Empire will just continue to bow down to the Thalmor, even though everyone wants to continue fighting!
And given that the Thalmor notes explicitly on their dossier on him that they want Ulfric rebelling, it's hard to see how his rebellion is all that effective against the Thalmor.
Well if the other games aren't set or partly set in Skyrim then it wouldn't matter much.
Cyrodil looks desolate compared to everything else.
Oh, wait, it was desolate.