Yubiuser not sure I understand what you are trying to say?
Are you saying there might be an existing feature that meets this need - if so can you be more specific about how or where to find this feature.
Are you talking about the filter options under 'Long Term Data > Query Log'?
Those allows you to filter available queries based on blocked allowed status yes, but we are talking about being able to control how much data is available for blocked vs allowed queries independently.
More privacy for allowed queries
More visibility for blocked queries
At the moment all queries get the same privacy treatment.