Could the feature of counting the number of pi tags (by prefix) and display it in PI Tag or PI Vision. In Microsoft Excel's PI Builder, I would query for pi tags starting with "dist*" and get a count.
It could be a new AF Analysis function TagCount("list of criteria"). It would be usefull for me to count how many tags are used by each company in the group or each plant for internal accounting purpose. Currently I have to do it in external code and search+count tags with OLEDB.