One thing that you could do is create a dashboard with your custom filters and link the dashboard:
1) Create dashboard just with Purepaths dashlet.
2) Change the Sorted by and Result limit
3) Save the dashboard (For example fastest 100)
4) Go to the dashboards/dashlets where you want to do the drilldown with this filter, right click"dashlet properties" > "Dashboard links" > Add your new dashboard
After saving the changes you will be able to drilldown to the PP dashboard with the filters you have pre-selected "Apply filters to dashboard"