Well and I personally don't want them to change the ending (except, as I keep saying, to possibly fix that one really terrible plot hole), I just want something to expand on the events subsequent to the ending. I know there are others who want them to actually change it, but I hope that doesn't happen.
Interesting (and tangential) question: what does the concept of a "absolutely finished product" mean when they were already planning to expand it with DLC? I mean, obviously there's more that they already intended to add on. Not criticizing your point, it just got me thinking on this.