I dunno, I think all the passive aggression in this thread is hilarious.
I very much doubt any of that custom content will ever be added to the vanilla game. Let's not forget that the custom maps that were added were polished by TWI first; fun though some of that other content can be on a custom server, it would at least need the same treatment before going official, not to mention a proper analysis of potential balance issues and whatnot. Given that they're already preoccupied with more profitable ventures, would it really be worth the trouble, even for the most promising candidates? I don't think so. The game doesn't lack for vanilla content as it is, and besides, the custom servers aren't going away.