Questions beyond the end that was not answered:
Jesse Pinkman- Did he drive into a tree and kill himself in an accident? I would have liked that one additional scene of closure.
Skyler White- Will she take the advice of Walt and use the GPS numbers to negotiate a deal for immunity?
Where is the $90M taken by the Nazi gang?
I think everything else was left answered. I thought the show was very well written but didn't agree who got the Emmy. I think Aaron Paul was the best followed by Cranston as a very close second.
While the story left me with the above questions that were not answered with closure, I find no point is speculating since the story is fiction and has no correct answer beyond the ending. Only suggestions on what we would like to see. That means every opinion can be a correct one.
I won't watch it again until the Blue Ray set comes out with the 55 hours of extra scenes and features. Also Vince said there will be copies of the scripted scenes that were never shot. You'll be able to read the script on even these deleted scenes. These are not scenes that were just suggested and tossed out on story, but deleted scenes that were deleted for time. They announced this set on "Talking Bad"