Whilst I liked "There and Back Again" as a title, I do have agree with PJ that it seems more suited to the two part structure. Especially considering Bilbo is already "There" so to speak. The Battle of (the?) Five Armies works pretty well, as it's going to be the central thing running through this movie, and the climax of the entire trilogy. Not sure where the errant "The" came from though.
I'd like to see any potential Hobbit boxed set of the extended editions given the "There And Back Again" subtitle, much like the hobbit novel was. That sounds like a nice idea.
Also note 25 minutes of EE content. Not terrible, better than AUJ. More Beorn, Laketown's party, a possible Thrain encounter and the scenes with the Dwarves in Dale and Mirkwood spring to mind as likely candidates. I'd like a bit more Bolg to better establish him as a character, but I'll not be dissapointed if there's nothing. Really looking forward to it - though I wish I had the willpower to
not pick up the Theatrical Edition Blu-Ray the day it came out and rather hold off until the Extended. But then again, I'm a wargamer, so will power is not really in my armoury, but "oooh shiny new thing" certainly is.