And BTW I personally got all choked up when Ullfric said his speech after we conquered Solitude. Very moving. He did say at the end that I had more important things to attend to.
Both of Ulfric's speeches, both at the beginning and end of that quest, are awesome. I went from wondering if I had made the right choice to being like, "HECK YEAH, ALL IMPERIALS MUST DIE, FOR SKYRIM!"
More things change if the Stormcloaks win than the Imperials, definitely. Not a whole lot, but enough so that the people in the world actually know that the Stormcloaks won, you can worship Talos in Solitude, etc.
Just make it quick. Ulfric is a busy man.