Regarding your second paragraph, I see your point. I did not really think Clark parents will have much to do in the future (they honestly have not even in the better developed and much longer animated movies). They are just (usually) moral anchor for the early years of Superman and sometimes the “escape from the city life”… I would not expect them to feature in the future films
yes…
Kevin Costner
for example; or these 2 
Regarding your second paragraph, I see your point. I did not really think Clark parents will have much to do in the future (they honestly have not even in the better developed and much longer animated movies). They are just (usually) moral anchor for the early years of Superman and sometimes the “escape from the city life”… I would not expect them to feature in the future films