Well my two cents is if season 10 is time progressed mid season leading up to Kal-EL's debut as Superman,then the writers have earned their pay,but as to Henry J.Olson's death that was suposed to happen leaving James B.Olson to take on the family business of newspaper photography if someone has a younger brother that has been trained in craft of photography at young age let us say 11 years old,and they continue the training til hiring age of 16 working part-time at the planet.
remember in the comics,serials,TV show,and the movies always depicted Jimmy as a younger than Clark by a decade .
Clark at time of asuming the Superman role was 30 years old by earth standards,but in truth was in his early forties in Kryptonian time frame, so that would make Jimmy in his late teens to early twenties,but that always been the writers in terms of the comics, the artist regardless of the story arc is written by scriptwriter,comicbook writer or episodic TV writer it depends on finding the right actor or model used to portray the character.
That's all I have to say on this topic.
Signed
Buck Rogers