I don't care if Sakura and Sasuke have babies in the end, but think for a minute and see why Sakura loves Sasuke so much. Sasuke doesn't hold any personal values for Sakura except for looks. She fell for him from the beginning because of his beautiful looks and after all the crimes he committed...
I was thinking that they will fight where they are at, and it is Naruto's strategic plan during the fight to let Sasuke chase him to the Valley of the Ends where the fight will eventually end (because we all know talk no jutsu and old memories will have a great deal with Sasuke). I feel like...
Kishi wants to write a story about 2 friends breaking and reforming their bond. So the final fight of the war will be Sasuke + Naruto vs Tobi while every single shinobi + kage involved in the war are there to witness them.
-Itachi tells Sasuke the "real" truth about how he never killed the clan...