So, I'm thinking about the scene where Kim breaks down down on the bus. The reason for it. I have two theories, and they're probably not mutually exclusive, but...
Kim cries because she's just really scared of the consequences she's opened herself up to. She could end up in jail, or permanently financially ruined, or both. I mean, even though she did it to clear her conscience once and for all and live again, which is the right choice and the morally good thing to do I think. I would rather that than she die in Suburban Hell. And it might not even be a sad cry. It could be one of those really intense relief cries and I've had one or two of those so I get it.
Alternately she's crying because the reason she's doing it is because she told Jimmy to do the same thing, and she won't be a hypocrite about it. And because of that she had to stop herself from saying what she really really wanted, which was to tell him to meet her somewhere and escape together, or run for as long as they can until they got caught but at least they'll be together. Hell it's kind of the ending I was hoping for, in a bit of an irrational romantic way.
I predicted Walt's ending pretty accurately based on what I had seen by the halfway point of the final season. After Hank dies I knew that it was going to end with Walt attacking the nazis with a machine gun to free Jesse. It was just a matter of how he was going to do it. And I'm not saying I'm a genius for this, they telegraphed it very obviously.
So the ending I had predicted for Better Call Saul by he time Howard dies was this: They find the remains of Lalo and Howard beneath the meth facility and this opens up suspicion into the circumstances of Howard's death. This naturally leads back into an interest in Kim and Jimmy by the police and knowing that Jimmy is Saul Goodman, who was in fact connected to all of this all along, they would go after Kim and hard. She would end up on trial for Howard's death. And what I pictured happening was Gene seeing it on the news, and deciding to blow his cover and come out as Saul Goodman on purpose, not to save her necessarily, but to make sure she's not facing it alone. And in that case they probably don't get to be in a room together again for a long long time at least, but it's a big famous case: Ex-Spouses Tried For Completely Different Crimes Yet Somehow Also Tied To The Very Same Sequence of Criminal Events. Lots of publicity, book deals, interviews. And at those times where Kim and Jimmy get to tell their story, they do so in a way where the other will know what they are saying to each other if they should ever see it.
The real ending was a lot sadder for the most part. Understandably so.