User blog:Tommy,Klaus&Kol2012+/One thing that might be left on a cliffhanger at series end

Now I am not exactly talking about the what happens next cliffhanger, even if it ends with sam and dean having a happy ending, this is more of a what happens next in terms of ongoing threats. Even if chuck is defeated, there is still the possibility as long as angels exist(and even with them going down and down), but there is a possibility any of them could I suppose create new demons. It might not just be exclusive to archangels or just lucifer, it could be any angel and yes there will presumably always be bad souls but the whole manipulation and brainwashing them to turn into demons is what I mean, that might always be a dangling thread.

I could also see as long as billie death is there, the reapers are there as same goes for ghosts as long as humans and other creatures exist

the pagans, monsters, leviathans, horsemen, witches, psychics are more in trouble of getting taken out permanetly.