What plotlines do you think were changed or abandoned?
One thing I always find interesting is looking back at a show and spotting plot threads that were never resolved, or moments that seem to suggest the writers originally had a different plan.
For example, one thing that comes to mind is the lawyer Saul sends Francesca to in the Better Call Saul season 4 flash-forward. It's written in a way that makes it feel like there's going to be a payoff later, but nothing ever comes of it. At the time, a lot of people thought it was going to be Howard, and I think there's a good chance the writers had that in mind before changing direction.
I also know the machine gun in Breaking Bad almost had the same fate, since Vince Gilligan has said he struggled to figure out how to pay it off.
Can anyone think of other examples from Better Call Saul or Breaking Bad where a plot point seemed to be setting something up that either changed or was never resolved?