Darkseid in particular have been completely overexposed for years, less of a cosmic menace who is supposed to have unlimited powers, more of a cliche generically evil bad guy. He ceased to be a God, and became Luthor with bad skin.
And most of the other New God characters tend to strike me as being more Greek gods soap-opera-ish than anything, and it's not like there aren't enough classical pantheon's around to tell that sort of story.
Scott and Barda really work because they are UNLIKE the other New Gods as they want to live relatively normal lives, and as such are fun because they don't really acknowledge their New-Gods-ness unless the plot requires them too, when they seem to be more like something out of an episode of Bewitched, which is fine.