What theme does it set? I'm honestly curious...
"Forgive me. There are no crimes when no one is left alive."
"We are Dunyain, child. Why would you fear us?"
"Because where there are men, there are crimes."
"There are only crimes when men are deceived"
Thanks for that, you do have a point... And reading those lines after reading the books does make them seem important. But I never personally liked how those lines were said by the characters, it didn't make much sense in the actual prologue.
I agree with people that the first apocalypse needs to be emphasized in *some kind* of prologue. BUT... The book 1 prologue tells us really nothing about the first apocalypse, which is why it really doesn't work for me.
Instead of the existing prologue which characters that we will actually see again, I would take advantage of the visual medium and create something more spectacular for an opening/intro/prologue. How about this:
1. Quick explanation of Earwa shared by two races Non-men and Men. (Non-men very much shown as Prometheus alien style creatures)
2. Spectacular shot of the Inchoroi ship entering the atmosphere and impacting the ground, massive shockwave
3. Brief view of the battle of Mengedda, the No-God hovering over the battlefield - "WHAT AM I? WHAT DO YOU SEE?"
4. Another cut to Celmomas dying in Akka's arms, and the prophesy uttered... "An Anasurimbor will return at the end of the world"
5. Akka wakes up from his dream. Esmenet comforts him, and we get a quick explanation that this wasn't just a dream... This actually happened. And now seems like it will happen again.
I think something like this will definitely grab the attention of people... Those who just expect something like LOTR and GOT will go "wizards *AND* aliens!?!?!"

All of these scenes will be expanded on in future episodes and Akka dreams. One could even do something interesting and start *every* episode with an Akka dream, gradually revealing more and more.
As far as the episode structure, I think one could do something very interesting, and do have character specific episodes - at least to begin with. Like this:
Episode 1. Kellhus - Start with him leaving Ishual on his long journey. Intercut with Moenghus dreams calling him to Shimeh. He finds Leweth, manipulates him, and then they are attacked by Sranc and the erratic. End on cliffhanger.
Episode 2. Akka - Our intro to the scholastic worlds, Esmenet, and Inrithi and Nansur politics. Akka meets with informant (in Monemn), he is sent to investigate Maithanet, recruits Inrau. Holy war is declared. End on Inrau being killed by the Consult.
Episode 3. Cnaiur - Cnaiur is getting ready for the battle of Kiyuth, but flashes back to him meeting Moenghus and that trauma, how he bacame chieftain. Battle starts (our first view of real sorcery power in battle), Cnaiur escapes by use of trinket (our first introduction to that) and heads home. But as he rides by his fathers grave, he finds... Kellhus. Cliffhanger.

Episode 4. Kellhus & Cnaiur - Kellhus manipulates Cnaiur to ride with him to the three seas. They ride across the steppe and have many excellent conversations. They are attacked by other Scylvendi, and rescue Serwe.
And so on...