I like the idea of Dashboard Filter Configuration, but to me, they are not in a useable space. They really need the option to filter off of custom properties. I do not know why this was not included, as you can filter off custom properties in every other area.
Additionally being able to add custom SWQL to the filter would be great. I have a global set of alerts that route to teams based off of a custom property on the object (Node, App, WPM, etc...).
Either of these approaches would be greatly beneficial. It would allow us to get to a point of being able to build out a central dashboard page, clone it, and then filter it down to the specific teams/disciplines in our companies. This would really make Modern Dashboards the way to go