Okay going back through their videos and WIP for anything story related or animations we haven't seen in the movies, it looks like there was some different story for Corruption 3. I think that's the one where Ciri goes and gets her holes filled by 3 other Futa doesn't seem like the original idea or at the very least there was more happening.
There's some story in WIP_45:
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In this video we see Triss stumbling around a library and drunk and then we see her talking to Geralt. She asks Geralt to give Ciri a kiss from her but then implies her feelings were never told to her. So she has a problem with Geralt. She has feelings for Ciri and for some reason she's drunk in a library somewhere.
Then there's this
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from their page from a few years ago where it looks like Triss and a blindfolded Yennefer are on a battlefield somewhere with a lot of explosions.
Then there's this WIP_46:
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In this video we hear the demon speaking and we see Ciri wake up and as she sits up in bed she hears a crashing sound and grabs her sword and goes to investigate.
Then there's this WIP_38:
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There's also a video somewhere there that shows Triss having sex with Ciri in missionary position with a circle with candles around them like some kind of ritual is being done. Triss is already a futa here so the demon could already be summoned, but then what's the candles and ritual for? Maybe it's what corrupts the lodge in endless horniness?
From these videos if we try to piece them together we can gather that at some point Triss and Yennefer were in a war together. Triss is mad at Geralt for something and is drinking and in a library but doesn't look like a Futa because there's no bulge in her pants, Ciri hears some noises and takes her sword to investigate, Triss is banging Ciri with ritualistic candles around them.
The originally it looks like the idea for 3 was to show how Triss became a Futa. Maybe how this all got started? Because when the second CoTL was released Ciri was already out with face covered in cum when the demon looked over her and Yennefer was downstairs getting pounded by futa Triss. Then the other CoTL showed Ciri trying to stop the demon but then doing some kind of spell/deal with her and having sex with multiple people with Yennefer showing up after the credits. Now in this story we see Triss having sex in a bar called The Golden Grain.
The current setup of the CoTL videos
CoTL 1: Triss having sex with Phillipa. It ends with there being a group of girls around them including Yennefer as Triss closes in on them.
CoTL 2: Triss having sex with Yennefer, the sex demon finds Ciri who is already covered in cum, Triss keeps having sex with Yennefer as the demon gladly watches.
CoTL 3: Ciri tries to save Triss and stop the demon but fails. The demon doesn't kill her because she feels Ciri's desperation to save Triss and maybe feels like she can exploit it. Ciri and the Demon wind up making some kind of deal which causes multiple women from the lodge to have sex with Ciri. It ends with the demon asking if Ciri is ready. We don't know what for.
The Golden Grain: Triss on the loose and having sex with people in a tavern, having done this long enough to form a relationship of familiarity with the Barmaiden. In the end, Triss is having sex with everyone and Ciri almost catches her but is stopped from entering and is sent in a direction to a Tower where the next part of her quest (maybe one the demon sends her on?) where she has to do something.
The Original CoTL3/SnyderCut: Triss is pissed at Geralt, Triss helped Yennefer in a war, Non-Futa-no-bulge Triss is drinking and wandering around a Library. Ciri is startled by something and wakes up to investigate. Winds up getting fucked by Triss with ritualistic candles surrounding them.
It looks like the original CoTL3 was meant to be a prequel to CoTL2 and maybe even CoTL1 where all the missing story beats we're asking about were shown but in the end it wound up being a continuation/sequel to CoTL2 instead.
So let's hope that we get the Snydercut of 3 or maybe get it released as CoTL4 if DesireSFM decides todo another one with these scenes. Because that seems where a lot of story is and I'd personally like to see how it all ties together.