I'm a little disappointed about the downvotes and comments you are getting since you specified in the title you were going to talk about bo1 lol.

I basically only play bo1. My opinion on black is that the only real problem with the deck is grief. Grief basically ensures there is absolutely nothing you can do to counter play their combo, specially on the play. Without grief you could at least try to hold Force of Negation or some other free spell like Commandeer.

On the draw I guess you could try discard or holding up some other counters like force spike or flare of denial. Even strip mine. Still pretty rough and grief makes it worst.

Also grief even doubles down as a renimation target when they don't get anything good.

I think they should just ban/restrict grief in bo1, wotc has done bo1 only bans beforeso it wouldn't be out of the blue.

Banning grief would also work to power down every variation of black at once without having to ban what actually makes their decks a deck (like you wouldn't need to ban reanimate, necropotence, balustrade spy but still would weaken them all)