Update: It appears I made a misjudgment as to the origin of oDesign, apologies. Massimo Menichinelli is a collaborator in oDesign rather than the originator. Sorry folks!
Do we need another place to collect product source information? After all, we already have sites such as Ponoko and Instructables. Yes, I would say - it would be good to have an equivalent directory such as Sourceforge for downloadable product data at least as an organisational/reference tool. Here you could keep cutting files/3D geometry files, as well as links to an instructable for assembly, Ponoko for buying the cutting, - user reviews and ratings, license information and prices are already incoroprated.
Already up there are a few projects originally from Ronen Kadushin - it will be interesting to see how the site evolves as more are added. The website is a little clunky at the front but nonetheless very much functional.