Over the years I've severely limited my use of the dashboard page. At the moment it shows my statistics. That's it.

The widget showing incoming links has been broken for ages (~Google Blogsearch). Up to last week, I used to display WordPress Stats as well (through Jetpack), but I got rid of those as well to speed-up my pages.

For me, the dashboard should show current status and alerts. Come to think of it: that's exactly what a car dashboard does as well!