I'm quite sure he'd have valued being his son's father a great deal - especially being the male heir to the Beaufort legacy but as time passed and his much-younger wife's barrenness became evident would he have separated from her and perhaps openly taken mistresses? Would Edmund have had no more ambition than being a soldier of fortune for himself and his son and done all he could to quash Lady Margaret's far-fetched intention to establish a Tudor Dynasty via Henry? I doubt that he'd have gotten the semiformal title of 'The King's Father' in any case.