Only thing we have to be careful of is that it doesn't get too heated
That's the only drawback. If there are a few more people interested though, I wouldn't have any objection to this and it could be interesting to see and discuss everyone's views providing no board-wars are started. It could be part of the existing Great Hall or another way it could be done would be to make The Great Hall an overall section/category rather than an individual Forum, then have two forums within the section - one being the existing Great Hall and the other being "The Great Hall Debates" or something similar?