It's a bit like what happened in Atlantis, with TVD, in hy opinion. Totally killed my desire to play there, because it was so TVD driven, and I'm not a fan at all.
I'm totally guilty of not branching out, yesterday was the first time I've posted multiple characters (or any at all!) for a while, and they were all (save Aziraphale) SPN. I'm guilty of not replying to other people, it's an issue I have that I need to work on. But I'm totally open to the pan fandom experience!
I get what you're saying though, and appreciate a SPN!specific 6words comm. Only issue I see with it is if it's exclusive SPN, there will be no cross fandom opportunities...It's a double edged sword, but like I said, I appreciate the SPN playground.