The CW show with the closest apparent parallel seems to be Black Lightning with the family structure and a look a different generations of superheros. And that is a solid model to follow. Curious if they'll do a flashback model, maybe the teen Jon is in the future and they flash back or forward so you see the early struggles and his life later on. I do hope they give it a touch of Legends' "why the f' not" attitude with storylines though, mix in a ton of pure comic goodness.