I would almost just sticky one thread, like he did with the Marketplace where it links to the browser, but link to the disc reviews, then select the disc you want to review exactly the way you would a course.
If you make it Thread like reveiws, there would be debating and probably hijacking as we all like to get off course, but do it just like the course reviews; Pics, info (HSS,LSS,Glide,Speed) then have the reviews where people can vote helpful or not, that would eliminate the haters reviews as they would get discredited.
I think that would also alleviate trying to search for a thread about a disc which became a dead topic or having to post a new thread about a disc again.