A chatbox would be nice! Where only ppl with 10+ or 50+ posts can post ;D
Not everyone is fan of IRC. And it's not integrated part of forum. Why are You saying that chatbox/shoutbox is not possible on forum? Do You mean that your script doesn't have ready solution for it. You could hire some php coder to make it. Or just change script for better one, like IPB or vBulletin.