See, Rothfuss made a Mary Sue. Since the story is being told by the guy the story is about, after the fact, to someone who the narrator has no respect for, Rothfuss has an out: He can let Kvothe keep telling his story and then out it all as complete bullshit, or he can let it be just an embellished truth and then let us learn exactly why Kvothe is essentially in hiding after living such a fantastical life - either way Kvothe gets his punishment / redemption and we learn about what real tragedies have befallen him. This story is deep and good.
What he cannot do is pretend that all that ACTUALLY happened, and that Kvothe went on to kill a king and retired to an easy life as an in keeper. That story would suck hard ass and make everyone's eyes roll out of their heads.
I'm convinced he wrote #2 and is basically waffling over how to turn it into #1, or arguing with his publisher over it, because he knows it's inherently bad.
I tell people this about wheel of time. It was originally supposed to be a trilogy and then they all saw $$$ and went "JUST KIDDING" on that ending and wrote 11 more books.