I should take a look at that blog.
I will never say that this project, being the first, has gone without issues, so getting every input and advice possible is a good thing and a chance to improve.
I've done things that I won't do in the next project(s). There are things that I would have liked to try, but the moment has passed. I added big changes to the story because the community showed me I was wrong (making Maddie's big eyes and Megan big ass full romanceable LIs are among those changes, and I'm happy I did it).
I also can say that, without having the ending written down, I would have ended up bogged down on side arcs, not meaningful lewd scenes, and who knows what. Having a goal defined has helped a lot with writing blocks (I have at least one per update, but I look at the epilogue and say "I can add a small scene here that moves the story towards X part of the epilogue") and with keeping a (more or less) tidy story. Without that epilogue, maybe I would be in the Great Swampy Middle right now.
I want every girl to have a story that doesn't revolve around Mjolnir, and the epilogue has a section for every girl and her story, so it's easy to not lose focus on what is important. When I finish (or pseudo-finish, or take a big leap) a story arc for a girl, the feeling of fulfillment is amazing because I know how it will end. And I want to show you, the players, how our beloved girls will be (not only their looks) 22 years from now.
That's one of the things that keeps me working on My Dorm. And one of the reasons I won't "milk" the game when there aren't more stories to tell. Because the big story (what happens when My Dorm's main timeline ends) still will need to be explained (in the epilogue).