There are several projects out there, from stockphoto to mwEmbed, that would really benefit from license and author information of images being accessible in some way in the database. (But perhaps also, mediatype [document, image, video, audio] date, artists, location etc)
1: licensekey -> licenseMessage
2: scraping the information from the existing messages.
My idea was to create a seperate table, then introduce some new type of keyword or function, add this to the templates so that the information gets wrapped by this info and then whenever a description page is parsed, update the table with the new values. I think we'd want to continue to use our current license templates, so for that we need to create some key value system, that is probably a bit smarter than the current license template names, or perhaps we can create a table of all license templates that describes the basic nature of a license (pd, attribution required, share alike, cc-0). That would make searching easier, with the multitude of licenses that we have. Preferably, there should be some consistency in keys for licenses among the different wiki projects, that would simplify searching multiple wiki file repo's...