I think he should.
For those that followed Genis before, you’re aware his last years alive were wonky.
His own book had him go crazy from cosmic awareness and he was like a villain protagonist with Rick Jones trying to reign him in.
Then he was on Thunderbolts and Zemo used him and killed him off.
Lots of stuff I glossing over, like him killing his future baby son with Songbird, and having a bastard child with a Shi’Ar spy.
Anyway. With his ties to Carol Danvers, Phyla, Hulkling, and the planet Titan.
I think he’d make a great villain for Captain Marvel, GotG and Eternals.
Like that trope of former hero turned bad, that other heroes (or siblings) have to now fight.
If any Marvel character should go the “Hal Jordan” route it would be Genis.
And this is coming from a reader who read his comic.