User blog comment:Tommy,Klaus&Kol2012+/What abandoned ideas were there in the 14 seasons of supernatural?/@comment-74.132.82.188-20190817151713

I don't know if it was "abandoned" or it may be resolved this season, but the whole king of Hell must go through Sam from the first episode.

Also Kaia and her spear, Sergei who now can claim a favor from the Winchesters, what the djinn saw in Dean's mind, and the full extent of Rowena's unshackled powers. And that's just S14.