Nothing about this show says typical Hollywood ending.
What does Walt want? He wants to get even with his former partners (the legitimate ones) and he wants to kill the Aryan Brotherhood types. Does he still want to get over on Jesse? or make up his wife and son? I think his family is dead to him after Walt Jr. went off on him. I think he will discover Jesse and remember their past. Jesse will become his alternate son.
What does Jesse want? He wants to kill Todd and he wants to escape. He also wants to rescue Brock and I think he wants all this to end.
What does Skylar want? I haven't the faintest idea and I don't think she does either.
What does Marie want? She wants some payback on Walt and maybe her husband's body.
What does Saul want? He is gone from the series just like he took a bullet and no one noticed.
What does Todd want? Of course he wants Lydia and to be a big man.
What does Lydia want? Who really cares?
What does Vince Gilligan want? I think he wants more than a typical Hollywood ending. He wants an ending that matches the series in originality, grittiness, and creativeness. Walt has to die but as a monster or hero? I think a little bit of both. He will rescue Jesse, he will mess up the Brotherhood, and he will mess up his former business partners. The rest is a mystery.
Jesse will get his revenge and Brock. I think he will ride into the sunset...alive.
Skylar and Walt Jr. will get NOTHING.
The rest we will see Sunday night.