Currently, the Widget Library defaults to a list of All Widgets.

This pulls Metrics Widgets into focus, despite the fact that they're some of the more limited widgets that cater to a more niche use case.

Suggestion:

To make it easier to get value out of Dashboards, have the default section of the Widget Library be "Most Popular". This View would highlight (yes) all Widgets but listed from Most to Least used/helpful as opposed to by type/category.