I think this idea is brilliant and is exactly what these forums need. That way people can talk in peace about their console of choice without the haters coming in and ruining things. In fact I'd go one step more and make the mods have to put their console of choice and they would be excluded from the other two forums like everyone else and it would help get rid of claims and feelings of bias.
Off Topic Forum
That would be so boring though...nobody would ever have any discussions...it'd just be constant patting on the backs of fellow fans...dull.
Believe it or not, it IS possible for people to have a reasonable discussion, even if they disagree.