I think live chat would be fun. And, even if it was just chit chat, it would be people who share a passion.
I'm not talking about replacing the forum with a live chat. The chat room could be optional and only the members who wanted to "chat" would enter.
To me, forums are so formal and chat rooms are far more casual. It's easy to get to know each other in a chat room.
My vote is FOR a live chat option!