#2 He’s a teacher, first.
This might seem unimportant, but Jefferson Pierce’s ongoing story arcs actually rely a lot on him coming from this kind of profession. True, he was also an Olympic decathlon star, but that’s more interchangeable than his current role as a mentor and guide to his daughters (though the synopsis only mentions there will be one) and eventually Static Shock.
The show will hopefully maintain this dynamic between him and his high school daughters and star students, whom he should be able to keep tabs on and engage with outside their home. And the girls are both future vigilantes themselves, likely to come into their own in later seasons if Black Lightning is successful and again, if they actually feature two daughters.
That said, it’s key for this show to recognize the dramatic parallels between Jefferson Pierce as a teacher (and principal) and Black Lightning as a “doer,” in the sense that he sometimes has to take action rather than stand aside. To be fair, though, he’s been characterized in the comics to be a fantastic educator and well known throughout the country for cleaning up the public school system, though that probably won’t exactly be where this series begins.