These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Ensemble Darkhorse: Darkseid, who became one of the DCU's most popular villains, and Mr. Miracle, whose book was the only one of the original New God books not to be canceled.
Granny Goodness, who was given one of the best origins in the DC Universe in Secret Origins of Super-Villains 80-Page Giant #1.
Fanon Discontinuity: Anything not written by Kirby has at least some people who claim this (sometimesjustified). Compounding the problem is that Kirby's work in canon is often treated with Broad Strokes, at best. Starlin's Death Of The New Gods in particular is often lumped in with Countdown as being this to Final Crisis.
Magnificent Bastard: Darkseid orchestrated the whole pact in such a way that Scott Free/Mr. Miracle would escape, allowing him to go back to war with New Genesis. He's also responsible for corrupting many characters in manipulative ways.
Mainstream Obscurity: While the New Gods aren't exactly mainstream, many in both the American comic book industry and fanbase often refer to how influential the series was. Yet one gets the impression many of those people never actually read it, especially since a full collected edition of Kirby's series was only published in 2007-2008. Notable examples include Jim Starlin (Anti-Life as depicted in his Cosmic Odysseydoes not work that way!) and Grant Morrison (who admitted to this in his introduction to Jack Kirby's Fourth World Omnibus Vol. 1!)
Moral Event Horizon: Darkseid has crossed it many times. Granny Goodness is guaranteed to cross it at least once anytime she appears.
Happyland, from the original Forever People series. An amusement park where people are tortured, and machines project their screams to people outside as fun and laughter. And the creepiest thing is, the children all realise something isn't right, but the adults refuse to see it.
In Final Crisis, when Granny Goodness's reduced to an evil spirit, who possesses a Green Lantern and creates centipede energy constructs.
Her capturing Batman also counts, as far as Granny not only single-handedly defeating Batman but also her speech where she exclaims how completely and utterly screwed Batman is now that she has him prisoner.
Most of Apokolips counts, but specifically Granny Goodness. Dear God, Granny Goodness. What to say about someone whose entire purpose is basically child abuse?