@civicdata @Federico these are good ideas and it’s important that data re-users understand the answers to these questions. I only came to the Open Data Index late last year but I thought it was measuring compliance with the Open Definition. Other measurement programs capture the best practices you mention.
Perhaps @mor or someone else that was there at the beginning of the Open Data Index can answer about the original measurement intentions, plans for the future and relationship to other measurement initiatives?
Thanks for the suggestions (especially historic - I get lets of requests from Universities for this).