It probably wouldn’t have occurred to me to throw “The Losers” into that list.
From the letters page of House of Mystery #266 (March 1979) comes an missive from a fan to the House of Mystery’s horror host Cain, inquiring about the decades-later existence of Sandman, The Dreaming, Justice League Dark, select issues of Swamp Thing, etc.:

Well, okay, maybe those books aren’t exactly what he was asking for…but hey, close enough.
Meanwhile, I would have totally read the hell out of a book like that.
That’s exactly my cup of tea.
Stupid assistant editor who answered fan-mail probably never passed the idea on up the food chain.
-P-
I know, the answer to the letter just dismisses the suggestion out of hand–ha, ha! what a crazy thought you had! This was probably the best idea that occurred at DC the entire year.
Mike, the new blog design is great–nice and clean!
Fantastic! I wonder if Lyle from Akron is still churning out great ideas.
And Lyle grew up to be Rob Liefeld. And now you know …the rest of the story.
AND they should bring back the DOLLAR COMIC!