i dont think walt would have cleared skyler on the phone, if she was gonna die anyway. I think she has to be there for Holly. As much as I hate skyler, i really do, i think it'd be tragic for her to die at the end of the series. Walt did ALL of this for her and the kids. she broke bad, but in the end, she chose hank over walt.
hank - he wanted to be praised "I can be the guy that brought him down!" = his fatal flaw. hubris.
walt - doomed to pay for his deeds
jesse - kinda deserves the tortured state he is in now. He should die tho, he did a lot of bad.
todd's crew - they all have to die.
lydia - probably so much of a loose end that she will have to die after threatening walt's family maybe?
it will be fascinating to see how walt outwits todd's crew... i mean, he could just steal the ricin and poison their food, it could be that simple lol. Maybe he just leaves the machine gun and out-thinks them.
So hard to predict the ending. Most shows, the finale is just cleanup and loose ends. This show, you could pack a full season into what will happen in the next 2 shows. Walt's travels, that whole last year, the tood gang/czech drama, etc. This show could just keep going.
Keeping lydia alive - and maybe todd too, they did make him a sympathetic character - for the Saul show maybe?