The ability to categorise and filter case studies contributed to drupal.org by country regions and other useful categories

This feature request is the result of a thread from the Australian g.d.o site. The user scenario is something like:

A project stakeholder interested in successful Drupal projects used in her country goes to http://drupal.org/cases and uses the filter options to see all the case studies submitted from her region.

That's my attempt to keep it very simple and straightforward at the moment. I think 2 filters would be useful: country and industry sector. Country is pretty much defined, the user profiles on d.o use it. Industry sector is also used on d.o profiles but I think it would be more useful if it was a pre-determined list of general industry categories like: education, media and entertainment, ngo, government, scientific etc.

I'm going to mock up some UI based on the current /cases page and post it here.