Black Bolt is not trash and Black Bolt doesn’t need a full team. I agree that he can’t be solo, but he can do a lot with just Medusa, and can do even more than that with the addition of Hit Monkey, which is just a three man team, similar to the likes to AV/Kraven/Scorpion that people enjoy. Here’s Black Bolt kicking his way through Eternity of Pain Depression, for example: https://youtu.be/rWmVDup9L-kYou can have a lot of fun if you go around with a full team, sure, but contrary to popular belief it’s not necessary. I’ve used BB in a two or three person set up in a lot of practical content.