The Profiler shows slow query statistics grouped by namespace, but it would also be helpful to view query records grouped by query pattern (perhaps similar to the "pattern" group option in mplotqueries: http://blog.rueckstiess.com/mtools/mplotqueries.html#group-by) and/or by specific fields used in the query.

This could be helpful, for example, for identifying particular query shapes that are executing slowly or suboptimally so that these can be investigated in more detail.