The thing is that the most probable ultimate ending is actaully th abscense of any. It's the easiest to code, and it's the funniest to implement. Think of it - Kornel created a worthless unique, and now sit there and laughs at everybody who is speaking about the ultimate ending. When we had JC, even the fact of his existance was carefully hidded, and the were no references to him in game. When we had a secret unique dragonslayer, we had no clues about it's existance in game. Now what we have - a reference to it in game, and even in the versions history. I don't know the truth, but it sounds too much like there is actually no special ending, and everything is just a joke of the developers.