1) the thalmor in skyrim mobilize to attack solitude if you helped the legion. your bring a copy of the orders to invade skyrim to Tullius. the legion then takes over the embassy and captures the thalmor there (including the ambassador) and they then make plans to ship them to the imperial city for execution. Tullius then plans a defense and counterattack against the invading thalmor. the thalmor have planned to besiege dawnstar and use it as a resupply/reinforcement point to strike at solitude. you fight the battle for dawnstar, then tullius plans to use the undestroyed ships as a sort of "trojan horse" to enter summerset isle undetected. while the legion prepares to set sail to summerset isle, your job is to recruit remaining stormcloak members into the blades, effectively turning it from squad size to a small army. since oodahviing pledges his allegiance to you after alduins death, you are allowed to use him as air support or mobile artillery in the upcoming assault. so basically, you join the imperials and prepare for a counterattack, then you go to summerset isle. i havent thought of any plot to add to the isles. i'll leave that up to you guys.
2) you help ulfric become king of skyrim. the moot mobilizes and he is crowned high king. since he hints towards taking the war to the thalmor, thats basically what happens. he asks you to lead the invasion of summer set isle with him. he then sounds out orders to all of the stormcloak armies to mobilize for war. and typically, a courier is intercepted by the thalmor. they learn of the plans and, knowing they can't fight ulfric with their current garrisons, they request reinforcements and retreat to dawnstar. they capture and are holding it for supplies and the reinforcements. you retake the city before they arrive, and prepare a defense/ambush for the thalmor fleet (since they have no idea the towns been recaptured.) basically the same thing goes down as what happens if you side with the legion at this point. as for blades recruitment, you can enlist the remaining imperial legionairres or, since you are now in high standing with ulfric, you can request the strongest troops from the stormcloak army to join. yes, you can have ralof join. if you side with the legion, you can get that legion guy who helps bust you out join as well.
3) if you haven't sided with either yet, the same thing happens with the deception and the falty orders and stuff. this is also a quicker way to resolves the battle for skyrim if you don't want to do the questline. you give the orders to tullius, yada yada yada. then you go to ulfric to tell of the inpending thalmor invasion and of your need for recruits. since he doesnt know if he can trust you, you have to retieve the jagged crown. this secures his trust. this is where you decide who lives and who dies. at the battle of dawnstar, the legion and stormcloaks temporarily join forces to drive back the thalmor. after the battle tullius sees his chance to wipe out the stormcloak rebellion right there. so, you can choose to aid ulfric in killing tullius and the remaining legionairres or vice versa. then the summerset isle invasion starts. i havent thought of any plot once in summerset isle.
Also, someone discovered the landmasses of vvardenfell and cyrodiil in the game, and many speculate these areas will be future spots for DLC. what are your thought on this?
