You're missing the point about the legend. What makes Sparda and Eva stand out is simply who Sparda is, not what he is. He's the guy who took a stand and fought against his kin for the sake of a 'weak' race. This goes against the grain of demons whose main purpose is to obtain absolute power. They state this time and again over in the games. Sparda picked something as evasive and questionable as LOVE over something more palpable and obtainable as POWER. That's what the legend is about, because as you said, they're not the first demon/human couple. There's another couple mentioned in the anime and then there's Nero/Kyrie, it's not that out of the ordinary.
Well, I disagree. It's important to note that demons did not usually have children with humans. Pretty logical, really, since they're seen as... demons. Nobody today would have children with demons if they existed. I don't know which demon/human couple you're referring to, as I have not watched the anime, I've only played the games. I thought the anime (the first episodes, at least), was pretty dull. Both Sparda's choice of love over power AND my statement are correct.
I don't believe it has even once been said in the games that all demons want to obtain power. Demons' purpose is not to obtain absolute power; that's Vergil you're thinking of. Trish or Lucia, or even Sparda couldn't care less. That's how Sparda was able to end up with Eva, too. Sure, Sparda was well-known as the demon ruler's lieutenant, but come on, any demon would have to have gone against their kind and their family just like Sparda did.
I don't see how creating a thread discussing Nero's origins and a thread discussing the many ways you can bring Nero back into the game are the same, nor how they would take away from each other. This part of your post actually put me off from posting in this thread just because of the juvenile temperament. Don't diss on other people's threads, dude, it's very unbecoming.
I will 'diss' them however much I like, if there's a chance the same topics will be talked about there, and if it's taking all the attention away from this thread. I never said they were exactly the same. I'd rather have this thread closed than to go into great detail about things that don't pertain to the thread's topic. Just a short while ago, ef9 and VOLPE were talking about something completely different (no harm done, though). If it goes on like that, then yes, I'll have to end this thread. Nothing juvenile about that.