I think the world wide nature of this group and the ensuing time zone differences means that a chat room is unlikely to be of use to more than a small number of users at any one time, eg all the East Coast Australian members could, if they wanted to and had something to discuss, meet at a specified time. - problem is that would be the middle of the night or some other inconvenient time in the rest of the world.
But, having said that, if we don't try it, we will never know.