"...of titles such as The Dark Knight Returns, Maus: A Survivor's Tale, and Watchmen."
Those works are good entertainment, but not the "golden age" of the medium. Saying so just ignores the true giants of the field, people like: Jack Kirby, Winsor McCay, Gil Kane, Steve Ditko, Schuiten, Bilal, Moebius, Steranko, Steve Englehart, Marshall Rogers, etc.
Jack Kirby looms over the whole industry like a colossus. His importance only grows the longer you look at his whole body of work, but esp. the work between 1960-1980.
Scripting word balloons is truly work for hire and not a true act of creation - and that's all I can say about Stan Lee.
If you really want to see what comics can achieve at their best, check out these:
* "Detectives Inc." by McGregor and Rogers, the B&W original.
* "Jenifer" by Jones and Wrightson, a short story from Vampirella
* "The Beguiling" by Barry Smith
* "Master Race" by Berni Kreigstein
* "Collector's Edition" by Goodwin and Ditko
* "At the Stroke of Midnight" by Steranko
The writing is tight and the art is amazing. Text is woven into the art and made a part of it.
That's how to do it.