Stryfe was Cable's evil clone over at Marvel.
NuKon can comeback IF they erase Harvest from existence like they did to paul westfield,cir-el,and JLK,then start over with a new origin,more black zero powerset (but with tactile senses),actual personality,and a desire to be a hero and one that never gives up.
Scion is the name.sounds like psi-on,like his psionic powers,and the defintion of scion is being the descendant or heir to a powerful family,which the Supers and luthors both are.
My 2 favorite kon looks would be season 2 of YJ look or the titans of tomorrow adult superman look,but with no cape,short sleeves,fingerless gloves,and a leather jacket.