i have never for a moment thought they would kill Bobby. But I see lots of fandom did think that. IDK. Part of it is me feeling like they have waaaaaaaaaaaaay too good a thing with Jim to let Bobby go. Never mind how Bobby is representative of too many things core to show (home, family, legacy, history, knowledge, hunters) to let him die.

Sam-n-Dean do have a lot to work out. But I think they will be able to do a lot of it in the Sam-n-Dean equivalent of "I love you, man" and have that mean everything. They both apologized first, after all (though Sam needs to actually HEAR Dean's apology, I think)