Given they already had decided to do it as a family situation before moving to CW, I think it was always going to be soap operatic. Comic book super-heroes are soap operatic. But the daughters will probably get a lot of the romantic problems.
It makes sense for Jefferson to be on Earth 38, if he's been a super-hero for awhile--because Superman has been around for awhile on that Earth. It used to seem that costumed super-heroes were a recent thing on Earth 1--but now we've seen that there was a Justice Society. So maybe Black Lightning could have a connection with some of the JSAers (or with a barista).