We have seen very often the need to have additional ways to filter inline the results of a Query. The included "Search" option is often not enough if you want to work with a long list of values returned by a Query and editing the query every time you want to add granularity, is not optimal especially when the Queries are shared.
In other systems, this is handled by adding a second row of inputs (dropdown lists or Text Inputs) underneath each table header element.
Something like this:
It would be pretty nice to have something like this in PIM query views.