Complex sentence: From 1986-2003, "The Man of Steel" was the Superman origin story, with even "Superman For All Seasons" touching upon it, and while it might've added and changed new things, it never removed Byrne's retelling.
Split into simpler sentences: From 1986-2003, "The Man of Steel" was the Superman origin story, with even "Superman For All Seasons" touching upon it. While Superman For All Seasons might have added and changed new things, it never removed Byrne's retelling.