I'm glad you like it. Yeah, when it came into my head I thought of a future fic (in which they are most likely dealing with the consequences of said change), but I also thought of the possibility that since the humans didn't know the nature of the planet back when the allspark arrived (or at least knew very little), they didn't notice that the planet had changed from what it was originally. So it could be changed a lot already, and humans are only just now realizing when the transformers arrived that they were made of a metal that was beginning to be dug up on earth. And now they're trying to find a way to stop it. The core wouldn't be changed yet, though, and that /would/ be an interesting scenario... Either idea could work in my opinion, but the latter would probably require a lot of earth science knowledge, and imagination. Now that I think about it, something spanning a rather large time frame would probably be best...gah, I put this on here so I would write it, so I'm gonna go before I convince myself to do so.