Brandon? Plot forgot about him, same as with Gravedigger and Lady Eve. And Lala will just....sit there, I guess?
You really felt that this wasn't planned as the final Season. So many Plot Threads will be left unresolved. A shame, really, and so shortly after Black Lightning came into the Arrowverse, too.
One can only hope that Painkiller gets picked up and will resolve a few of Black Lightning's plot threads. Because I see little chance of any of the cast making any appearances in other Arrowverse shows.