All in all, I think this would go a long way towards making the GBC web site a more "living document".
While I'm at it, I also think you should add an entry telling if you have the original disk or tape image in the collection or not - this would be quite useful, especially for somebody like me who is about to start archiving all the stuff I have. Refer to World of Spectrum for instance, and their TZX/STP projects, which are truly excellent. This is exactly what the C64 community needs, I think.

While looking at WoS, it would be nice to be able to link in magazine reviews of games to the web site, docs and other infos if available, cover scans, alternate versions and such (reissues, compilations etc.)