Vanilla was indeed a more social game, but every time I see someone waxing nostalgic about how much better the community was back then, I really have to wonder what the hell they were on at the time. Yeah, there were a handful of players per server that everyone would more or less recognize, but these people would invariably abuse the shit out of this status to act like complete douchebags to the rest of the anonymous casual scrubs, and make sure that nobody could just play the game in peace without knowing every last detail of their guild and faction drama.
Yeah sure, the nature of the game meant you had to interact more with other players, but once again it's questionable whether this was as great as people remember. The friendships you made in-game were all sort of built on this paper thin foundation of needing each other to clear content and obtain phat lewtz. If the bonds between players were really that strong, then you would want to interact with people purely to enjoy the pleasure of their company, you wouldn't need all these game mechanics to force you to talk to them.
Let's face it, at the end of the day, we're gamers. We're a pack of freaks and geeks, weirdos and misfits that all come together in this game to slay dragons and collect purples. Sure, that in its own way is kind of cool and can make for some memorable experiences, but it's more one of those once in a lifetime things that was special because it happened organically, and can't really be replicated no matter how hard you try to make it happen.