Originally Posted by Man of Tomorrow
Hmmm. This lines up with how Snyder said he cast Watchmen. He wanted relatively younger actors for traditionally older roles, so they could play themselves in flashbacks but then be aged to look older in the present.
I suppose they could do this with Costner as Pa Kent.
There's no need. Kevin's getting up there in age, though not nearly as old as Glenn Ford was when he played it (7 year difference). This is semi-recent pic of Kevin:
That's old enough.