Thank you for writing this article. It represents another approach to what I have suggested in my article printed here last year about Fragmentation Measurement
I believe that the quality of data is to be measured firstly concerning the gap between the physical device and the way the users are using it.
The second level has to deal with the redundancy on data (probably check replication).
The third level which I believe this article is about, is the beginning of a BI, because you are looking for missing data and taking decisions according to the contents of the data base.
This subject is very important, and should be continued.