I did laugh when I saw this interview with Olyphant:
“I was also cautioning Dave and Michael, ‘Guys, if you bring Walt back at the very end of this story, you better fucking deliver on the first seven,” he said. “Because the worst thing that can happen is the audience feels, when they see Walt,
Man, you guys put us through all this just to get to that?‘ So it was such a big swing, such a bold idea. I was super excited about it, and I knew Walt was interested. So I was thrilled by it. And it just made us dig deeper on every episode prior. I said, ‘You can’t end it like it feels like a layup, like we’re apologizing for something, right?’ Having now seen it all, I feel like if we were so lucky to come back in some way, I am just as excited to bring back characters from the original show as I am characters from this incarnation. I feel like the writers did an amazing job of making everybody feel like they’re part of the same world.”
Well, I've got some bad news for you, there, because "You guys put us through all this just to get to that?" is a lot kinder than my actual reaction.