Ulfric is guilty for more than just High Treason, you just used Torygg saying that Ulfric was dishonorable in the duel as proof it was a fair duel... That really helps your cause. Ulfric is charged with a few things,
"Ulfric Stormcloak! You are guilty of insurrection, murder of Imperial citizens, the assassination of King Torygg, and high treason against the Empire. It's over." - General Tullius
Funny how his witnesses are saying he murdered the High King... the only person who was in Solitude who supported Ulfric's actions, was the gate guard who wasn't anywhere near the Blue Palace. He is guilty of killing the High King, he says he killed him, his Stormcloaks know he did it, everyone in Skyrim know he did it. What is the point of a trial if he is already guilty, he went to the Blue Palace with the intent of killing the High King. You can't go around killing anyone you want, not by Imperial Law.
Imperial Law is higher than Skyrim 'tradition'.
You blame Titus Mede II for every little thing you can think of to back biased weak standing arguments "It's his fault the Blades were killed... even though the Thalmor hadn't even ended their 70 years of silence, so he should be able to see into the future, it's all his fault" "It's Titus Mede II fault the Great War happened, he should of agreed to the Thalmor Ultimatum and given southern Hammerfell, outlawed Talos, disbanded the Blades, paid the Thalmor huge sums of money because prevention is the key, even though all of the Empire would of been torn apart by Civil war and thousands killed internally while the Thalmor could just walk in unopposed because it is what I would of done" then the "It's Titus Mede II fault a peace treaty was struck with the Thalmor, the Empire are cowards because they couldn't fight anymore, they should of kept fighting but even though I blame them for fighting in the Great war anyway, because my tactical skills would of been surrendering without a fight even though I would of hated the Empire even more, but I use this as an argument like I would of supported them if they did."
The Empire did not enforce the Ban on Talos, this is acknowledged many times over. It wasn't until Ulfric started up trouble did the Thalmor come in force, putting pressure on the Empire to enforce their part of the treaty. What gives Ulfric the rights to go against a treaty thousands died for, he's ruled by emotions to the point he is unstable, he is fighting against Tyranny? How can you fight to remove Tyranny when you put a Tyrant on the throne. He seeks to take control of Skyrim for himself, place Galmar in charge of keeping the Jarls of Skyrim in line, making sure they follow every one of Ulfric's orders, he claims honoring traditions, but removes tradition when it doesn't suit him, he was the one holding back the moot, saying Damn the Jarls and damn the moot, that is something you expect from Tullius not from a 'True Nord' who honors tradition. Yet at the end he claims to love and respect the Moot, only when he has Galmar in charge of the Jarls, his armies loyal only to him and no one else. The killing of the High King was merely a message to the other Jarls, how could he truly be fighting for freedom if the bloody man he killed, liked and respect Ulfric and wanted to hear more about independence, that is why Ulfric was allowed back inside the Blue Palace without suspicion, they thought he was going to ask Torygg to declare independence.
Galmar:
"I still say you should take them all out like you did Deadking Torygg."
Ulfric:
"Torygg was merely a message to the other Jarls. Whoever we replace them with will need the support of our armies."
The Jarls will need their armies to rule. Ulfric cares for songs and how he will be remembered, not his people. He is a tyrant who is blinded by stubborn Pride, so into his display he gives off that he has lost himself in it. The man who cares for tradition and Nordic culture... yeah he completely does, even though he's willing to end the fairness of The Pact of Chieftains.
Galmar:
"The Jarls are upset. They don't all support you."
Ulfric:
"Damn the Jarls."
Galmar:
"They demand the Moot."
Ulfric:
"And damn the Moot! We should risk letting those milkdrinkers put Torygg's woman on the throne? She'll hand Skyrim over to the elves on a silver plate."
Ulfric:
"And it is for these reasons that I cannot accept the mantle of "High King." Not until the Moot declares that title should adorn my shoulders will I accept it."
Ulfric:
"How'd I do?"
Galmar:
"Eh, not so bad. Nice touch about the High King."
Ulfric:
"Thank you, I thought so, too."
Galmar:
"It's a foregone conclusion, you know."
Ulfric:
"Oh, I know."
She'll hand Skyrim over to the Elves? The Empire are the ones keeping the Armies of elves out of Skyrim, they're hardly Thalmor puppets. Only puppets are Stormcloaks so dumb they can't even realize they're being aided by the Thalmor.
Let Ulfric take his army, let them be destroyed because he only wanted songs and a good story.
Ulfric: "The Empire is weak, obsolete. Look at how far we've come and with so little. When we're done rooting out Imperial influence here at home, then we will take our war to the Aldmeri Dominion."
Rikke: "You're a damn fool."
Ulfric: "Rikke. Go. You're free to leave."
Rikke: "I'm also free to stay and fight for what I believe in."
Ulfric: "You're also free to die for it."
Rikke: "This is what you wanted? Shield brothers and sisters killing each other? Families torn apart? This is the Skyrim you want?!"
Galmar: "Damnit woman, stand aside."
Rikke: "That's not the Skyrim I want to live in."
Tullius:
"You realize this is exactly what they wanted."
Galmar:
"What who wanted?"
Tullius:
"The Thalmor. They stirred up trouble here. Forced us to divert needed resources and throw away good soldiers quelling this rebellion."
Ulfric:
"Let the Dragonborn be the one to do it. It'll make for a better song."
Tullius:
"Song or not, I just want it done."
Galmar:
"Just kill him and let's be done with it already."
Ulfric:
"Come, Galmar. Where's your sense of the dramatic moment?"
Galmar:
"By the gods! If it's a good ending to some damn story you're after - perhaps the Dragonborn should be the one to do it."
After the war, contact was established and he has proven his worth as an asset.The so-called Markarth Incident was particularly valuable from the point of view of our strategic goals in Skyrim, although it resulted in Ulfric becoming generally uncooperative to direct contact.
Operational Notes: Direct contact remains a possibility (under extreme circumstances), but in general the asset should be considered dormant. As long as the civil war proceeds in its current indecisive fashion, we should remain hands-off. The incident at Helgen is an example where an exception had to be made - obviously Ulfric's death would have dramatically increased the chance of an Imperial victory and thus harmed our overall position in Skyrim. (NOTE: The coincidental intervention of the dragon at Helgen is still under scrutiny. The obvious conclusion is that whoever is behind the dragons also has an interest in the continuation of the war, but we should not assume therefore that their goals align with our own.) A Stormcloak victory is also to be avoided, however, so even indirect aid to the Stormcloaks must be carefully managed.
He seeks to remove all Imperial presence, yeah it is completely perfect to remove all trade and commerce to Skyrim. What on earth do they plan to do when they won't even buy from Non-Nords, Skyrim at least under full Imperial control, there are more people happy than upset. In the bigger picture the Empire can at least reach the Thalmor, Stormcloaks can boast all they want about fighting the Dominion, but they don't like magic so it's going to be interesting how they defend against an army that can hit them with lightning and fireballs.
Geographically speaking, Skyrim can't don't anything by itself. They can sit around going on and on about how they're taking their army to the dominion. Good luck invading Cyrodiil when you can't risk all out war with the Empire.
"We're ready to march on Solitude, but the Emperor's cousin is getting married! If royal blood was spilt, all of Cyrodiil would be up in arms. We can't afford an all out war with the Empire. So we'll bide our time for now." - Ulfric
Can't even afford a war with the Empire yet they think they can stand against the Aldmeri Dominion... how they get to the Dominion is another question all together, they aren't going to make peace with the Empire, that hope was lost when he executed Tullius after he surrendered, Tullius would of been a bargaining chip to get the Empire to form a treaty with skyrim or even peace talks.
Though looking at a map, they aren't going anywhere without heavy losses, they go by sea? Weeks or months at sea to Summerset Isles? No reinforcements, no safe port till all the way back to Solitude.