It is very well done, but, jeez, not enough the book is gone but not a nanosecond of LSH? Rub our faces in the rubble of Legion fandom, why don't you, DC?
Although, there were SuperMAN stories before where the teen Legion made an appearance (see Whatever Happened to the Man of Tomorrow, and that other "imaginary" story where Luthor succeeded in killing Superman).
I just think people generally link Superboy with the Legion more than with Superman. So they've kept it pretty tight.
Also you can't overlook the sheer importance of some of those images, such as the modern Superman Red & Blue or him being "killed" compared to classic Superman villains or heritage.
"...not having to believe in a thing to be interested in it and not having to explain a thing to appreciate the wonder of it."
To be fair, the only representation of the Justice League was the Superfriends cartoon. Plus, they had to fit in Superman appearances in all sorts of media.