What you describe would be waaaay too much work for way too little reward. I want to expand the epilogues a little bit, but more in terms of width than depth.Though after great story and awesome showdown I met an epilogue... It's great we can see what comes next with everyone but after player chose his LI what he/she gets? One naughty render with couple of sentences meaning "they live happily ever after". It's like after 2 months of great story, long and beautiful final battle, literally days IRL, our hero gets his reward. But player don't. I understand that game is not about destination but about the way (and what a way it is), but still it would be nice to see what comes after final conflict the same way we saw what comes before. I sincerely hope there will be satisfying epilogue in NG+ and there will be a reason for playing your game again.
Besides, I'm a traditional storyteller. You don't want to linger too long after the story's climax (some novels take it so far as to stop a page or two after the climax resolves). The current epilogue is already pushing the limits. Making it longer wouldn't really serve much purpose except to add... more stuff. And what then? Judging by some of the feedback I've received, it sounds like what people want is to just continue playing the MC's story indefinitely. While that is flattering, it's not at all what I was aiming for with this story. What happens to the characters beyond what you're told in the epilogue is up to you. It becomes your story as much as it becomes mine.