Ryujin
Legend
I'm really liking the tone that I'm seeing in the trailer.I have a feeling that Gunn, who has been very diplomatic when talking about his predecessors, is going to be directly addressing the Snyder era in this movie.
I believe he cited Joe Kelly's "What's So Funny about Truth, Justice and the American Way" in Action Comics #775 as one of his influences on the new film. (Potential movie spoilers in the link, based on some of the stuff we see in the trailer.)
There is also an animated take on the link you posted, called "Superman vs. The Elite", that gets a minor "other media" mention on that Wikipedia page. I quite liked it.