Personally I don't see the point to it. Zuni is trying to constrain the number of forums as much as possible as it is, you would need an extreme amount of support to have a chance at acceptance.
The Highly Technical forum was barely accepted and that had seemingly everyone asking for it. That's been the only forum added in almost a year in a half or so.
In addition, there is already an Operating Systems forum, so I don't see the need to add a Linux/Unix specific forum. I fone was to be added it's almost a guarantee many will complain there isnt a Windows specific forum as there are likely more Windows users here. Then we will have people insisting on a BeOS forum etc.