Here's a take...the New Gods can be used as a crutch when people can't figure out how to use a superhero's classic rogues in interesting ways. (i.e. Superman the Animated Series they've straight up said they used the New Gods because they were having trouble with Superman's rogues [same guys who made Freeze into a household name couldn't figure out how to use characters like Terra Man, Master Jailer, etc]). I wouldn't want Diana to mix up with them too much, I get that they can satisfy the powerhouse problem, but if they fight Diana too often I see it as a cop out. (i.e. if they use say Stompa to fight Wonder Woman over Giganta that's when I ask "WHY?!")