I think that's the point. We're now two or more universal do-overs since Crisis, so Hoshi is a holdover from an earlier continuity.
At various times I mused her into becoming Doctor Terrific, and fleshing out an entire "Marvel" family for Michael Holt's corporate and adventuring interests. There was Professor Terrific(Ray Palmer), Terrific Jr., Miss Terrific, Aunt Terrific, etc. It was kinda sitcommy Challengers of the Unknown, like Fantastic Four but cross-generational with engineering paychecks.
My other idea was merging her character with another weird holdover from Crisis: Lady Quark. Both women were impatient and haughty, so I took elements of Quark's history as regent with Light's ethnicity, and turned DC's Earth X into a superpowered Man in the High Castle. Quantum Woman, Boss Dynamo and Sailor Bonsai are the contemporary ruling family for the Japanese Pacific Empire. Still incredibly intelligent and twice as bitchy, Empress Toshino Hoshi and her family are refugees on our Earth.
Back to black superheroes:
John Stewart should be the Beacon of 2814, and run our solar system like a giant precinct. Jessica, Simon, Kyle, and others! can all be Lantern officers deployed to deal with international and interplanetary situations. Gardner can be a Torch and deal with all the intra-dimensional Bleed incursions that happen on Earth. I'd love for there to be more colonies and life throughout the solar system than burned-out Mars. Maybe there's Rann and Thanagar outposts on Europa? In any case, John's the guy who knows people and gets shit done. Hal can stay in space making friends and enemies.
I'm on record for suggesting a Fresh Prince model for Static Shock and Black Lightning, and giving Mr. Pierce a position as principal at Wonder Woman's "Sky High". Black Lightning might not have the high status of John Stewart, but he's doing the most GOOD by creating superhero adults from superhuman children. Both are important, and both should be seen.