Ya know, even my beliefs call something like that into account, so I can dig this somewhat... I believe that we are the THIRD "type" of mankind. I believe that the Nephilim and the Anakim came before us (merely called the "Giants" in modern day Scripture)... They were, similar to us, part of the Heavenly Host, that were kicked out with Lucifer; most believers in the Creator attest that the Earth is only around 6,000 years old; I'd say that, at bare minimum, it's about 10,000. But then again, this is getting off-topic, so I'll try to bring it back... My only point in bringing that up, is that I can "dig" that theory, as in, yeah, I know we weren't the first... There's no way... That's the only reason why I brought that up. Now, getting back on topic:
I'm sure that some fanfiction will arise out of it. Somebody's gonna read that, and go, "Wow; that's good. I can base an idea off of this, with a pinch from this other theory over here," etc. Like I said, that's the beauty about something like this; we have almost NO limit as to what we can do...!
EDIT: Now, with something like, say, "The Simpsons," on the other hand... I wouldn't press it much... (Can't say luck, 'cause I believe only in destiny. What is supposed to happen, will always happen, no matter what. There are no "mistakes;" it's all a part of the learning process. It was supposed to happen, because it did. Simple, even oxymoronic (perhaps one of the reasons why I can kind of identify with Ruby so much), yet profound. Our destinies are always on track, especially if you believe that time itself is merely an illusion, created so that mankind can exist. We are not omnichrones, after all...)
Something like that - The Simpsons - has TOO MUCH structure for much to come of it - although, maybe some of us could come up with new ideas, better than the original writers...!
Hmm, I also have my own "theory," I shall call it, about the dinosaurs, but to reveal it, could put me at risk... Some things are better left to one's self.