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The second is about the epilogue. What’s been datamined is not really cut content but content that we didn’t want to release because we didn’t think it worked. We’re pretty strict with ourselves and our ideas. If it isn’t good - if it isn’t fun to play - it doesn’t make it into the game. One of the reasons why we trimmed the epilogue is because we were afraid the ending cinematics were becoming too long and would detract from the epicness of the experience. But clearly, not everyone agrees with us! So we’re going to do something about it.

Adding the fact that you said that the Upper City was intended to be epic and having an amazing cinetamtic, it's a shame that wasn't added for the official release.

Personal opinion, what made the game such a wonderful experience for me were the cutscenes. I even found myself more intrigued and playing the companion quests rather than trying to reach the ending of the game.
Exploration, improving your characters' relationship with the group, intriguing side quests,etc were one of the few things that made the game such an immersive experience (thank you adding Karlach a good ending in the near future).

But if the team is worried the cinematics would be too long, you could add a button to skip them, maybe?

I have reached the ending with around 142hs into the game. And not only the final scene felt truly lacking but also the amount out scenes with the group/companion(s) as well.
I hope you are not afraid to add more scenes + improve the epilogue, and if we can have a sneak peak of the Upper City as well, it would be wonderful.