If you have not seen all of Breaking Bad.... do not read.
I was rewatching Better Call Saul and that first scene when Saul is in the Cinnamon Bund place, looking around, concerned.... what is he concerned about? No one knows him there. No one is really looking for him (is anyone). Then I start to think back about how Better Call Saul was automatically renewed for Season 2 not even a week after production began on Season 1. I know this is not going to happen, but, it makes just the smallest amount of sense for me post....
I think (not sure if this is more hope/want/desire) Walter White is alive and will return in Better Call Saul.
My "evidence"
Despite all the confirmation of Walt being dead, as Bryan Cranston said himself, where is the body bag?
The quick pick up of Season 2 of Better Call Saul (what is so big that it got a record time second season when the first never aired?), I more so hope, it is Walt returning. Not even one episode aired and here it is being picked up. Something, BIG must be happening in season 2.
Now I view Breaking Bad as the greatest show of all time, bar none. It had a perfect start, middle, and end. In my eyes though, there is still a lot of story left to be told and that could all start with Walter being alive. We heard the ambulance and police car immediately after he slumped down. He could very well be alive as the bullet in the stomach is survivable.
My idea would be, in the season two finale of Better Call Saul camera shows Saul working at the cinnamon bun place. Camera pans out and shows a man walking up (who would be Walter but we don't see). He speaks... "A Diet Coke, please, and five minutes of your time." Episode ends. Walter is back. This would be the same line he said to Gus.
Breaking Bad season 6 would occur, but I would not call it "Breaking Bad." Walter already broke bad. Call it something else so it can be its own thing, that way "Breaking Bad" can be part one of a continuing story or for some... a perfect ending that is not to be messed with.
I would call the new show "Breaking Out" (16 Episodes that lead up to the meeting between Saul and Walt at the cinnamon bun). Walt is in jail, goes on trial. Imagine the scenes. Walt testifying. The prison meeting with Skylar, Walt Jr, Holly, Marie. All through the trial (Walter could be represented by HHM for a Better Call Saul easter egg/tie in). Walt would be trying to break out of prison, where as Jesse would be breaking out of his old life, trying to start anew.
Jesse is struggling in real life, debating whether to go back to his old ways. Jesse season 1 arc would see him holding up a shard of the crystal blue.
Walt's stroy arc would end with him finally escaping, on the run, and finding Saul in the cinnamon bun.
Season two would be titled something different, trying to continue the theme of allowing the audience members when to stop the story of Walter (as I said before, by calling the show somehting different each time, it can differentiate it self, having for an ending, or just a continuation, your choice). I have not thought this far ahead, but I would keep "Breaking" in the title for the next season.
Chances of this happening are .01%, but I guess it is fun to think about. If done correctly and more thought out than a 6am at night post, I think the idea of Walt being alive could work very well.