Guessing the next step of a story can be hard.
The main point of uncertainty evolve about Jormag's actual plan. It seems that he now lloks beyond pure destruction, and that everything happening right now serves his purpose, just in a way we don't yet understand.
Also the influence Aurene could have and how Jormag's death would affect the world.
So I tried to thought about this this way:
(I won't go about details, just great lines and moments)
What do people expect?
Why it doesn't work
Some thoughts about Jormag:
What is Jormag? We use the term Elder Dragons, but they are more a force of nature than actual beasts. What if their dragon form wasn't what they are, but rather the form this form choose to adopt? The only proof we have of Jormag even being a dragon is a tooth brought by a norn who was seduced by him.
What if Jormag was just...ice? A storm of ice? A ice that blow in the air, froze everything it touches, corrupt living creatures and live within them. What if the dragon of ice was just a pure construction of that storm that just temporarly shelter his mind. Then fighting Jormag would be like fighting a blizzard: as long as he has something to froze, that ice carry his life, and it can be killed. Except maybe if you bring the purest of heat to his heart (hence his weakness to Primordius. Which himself appears more as a creation of obsidan and lava than a dragon).
My thoughts on things that could happen:
United Legions will go confront Bangar and Frost Legion. However, partly because of the ennemy strength, partly because of deception, partly because of intern disagreements, Smodur will ended up killed and the Claw of Khan-Ur will fall to the end of Dominion. Ryland will play a significant part in this, and will have a serious confrontation with both his parents, with possibly one of them being badly injured, and sohotin stolen as well.
(end of Episode 4)
(We may have another Memories chapter that would give context to following events)
Following that catastrophe, support to the Dominion among charrs will increase dramatically, and Anger and fear will skyrocket among humans, pressing Queen Jennah to eradicate charr while they are weakened by their civil war.
Despite our attemps with the help of Norns, Bangar will reach Jormag, try to destroy and claim his power...and succeed. Definitely succeed. Except Jormag wasn't the dragon. And now Jormag as a blizzard will be born again, not as a creature, but as the collective super-entity of half a race taken by his corruption. One Charr. And New evolved Bangar at their head, proudly claiming the title of Eternal Khan-Ur.
(end of Episode 5)
Blizzard would spread on northern Tyria and take everything. Jormag would incarnate an army more powerful than anything Tyria will ever had. Aurene would be powerless, cause she can rule magic, but Jormag now rule matter and flesh. And so the dragon will come to us with a choice we can't refuse. "Stand against me...and you stand alone".
As Blizzard engulf Ascalon where United Legions and Human Armies seemingly doesn't stand a chance, we'll releash the ultimate weapon Jormag didn't expect: using Magader, Sohotin and royal blood to amplify foefire and take control over the ghosts of Ascalon, bound to fight one last time before going free. Watching that armies of ice charr conquerring their lands once more, they confont them in all their burning fury, ignoring freezing. While we and Aurene still struggle with doubts about what to do with Jormag, a course of events lead Ryland and Braham to face him, in the core of the storm. The combined powers of the fiery blades, Eir's bow, and foefire (and possibly back-up from flame legion) lead to the destruction of Bangar and Jormag's death. But what would have been a victory turns to nightmare, as both Braham and Ryland die, Blizzard endures, and frost legion vanish, meaning two thir of the Charr race is now gone. As Almorra stated, Bangar was the end of the charr.
(End of Episode 6)
Epilogue: as United Legions and humanity prepare for battle, we make one last attempt to bring peace between them and are close to succeed...until a cataclysm of seisms and fire destroy the place (being Divinity Reach, somewhere in Ascalon or another place). We go inconscious for a time and only reach Ascalon to witness a blooshed between humans and charrs. Only the rise of destroyers in various place of Tyria ends the fact but the seeds of war are now sowed. With the only being able to doom him gone, Primordius unleash confidently his wrath upon the world, and magic start to go really unstable everywhere, despite the efforts of the Spirit of the Wild to stabilize the magic released by Jormag in the Blizzard. A blizzard that still cover the previous charr territories, probably for decades.
With the end of the world all but near, we gather one last time in the Grove where the Pale Tree and Aurene await for us. The Pale Tree is taught by Aurene to assume the place of one missing Elder Dragons. Then they use their divination powers to show us the last task we can still complete to prevent the end of Tyria. We must go to Cantha and try to uncover any knowledge and creature that could bring balance to magic, since there is nothing left on Tyria. As the vision blur, we suddenly feel that something is looking at us as well: a powerful presence in the ocean that feel the move of Primordius and has plan of his owns...
And so we're on our way to Cantha, leaving behind Tyria where Charr has doomed themselves in their pursuit of war, where Norn has lost themselves in their pursuit of Glory, only carrying with us the Memory of two of their best, Ryland and Braham, so that their devotion can inspire us. Before it's too late and world collapse.