Bros, Jesse lives. Come on. Gilligan has said time and time again, Walt needs to be punished and he's a big believer in things like karma.
Jesse atones for his sins, works with Hank, gives Walt and maybe Saul up. I think the last thing we'll see Jesse doing is inviting his family around for dinner, or getting out of Alberquerque with Andrea and Brock. Something like that. Something nice and heartwarming.
Hank will live. He might get taken hostage by Lydia and her cronies or something but I think that's what Walt's machine gun's for; he saves Hank and then takes the ricin or something and dies in his arms or some shit.
I'm pretty sure Skyler, Todd and Lydia all die. If any of the characters are expendable, its certainly the latter two. And Skyler just because... Walt needs to suffer.