I would like to see support for practical threaded display. This would include a scrollable thread tree window that can fit on the screen along with the message being displayed. The tree would show which messages are read and unread. It would provide an easy way to navigate the tree. Also, the admin panel would allow the turning on of a feature where each message's info shows which member the message is responding to, along with a link to that message. When entering the forum, users would have a link they can click to see all new messages written to them. They would also be able to subscribe in a way where they are notified of new messages to them. If this ability is not one of your main concerns now, at least build the basic processes of the forum in a way that would allow you to add this later.