Bingowings said:

It would tie in with the end of the LOTR film trilogy, where Frodo's story is added to Bilbo's.

The films aren't the books and I don't have too much of a problem with that.

I'm willing to enjoy the framing story. "The Hobbit" film is not only an adaptation of "The Hobbit" book but is also going to be for many people the sequal to LOTR. It's important that viewers understand how the stories fit together.

I'm curious exactly HOW Galadriel and Saruman will fit in. Tolkien DOES have a place for them in the wider tale, so it's not like it's mindless fanwank, but it's not in the book exactly.