A Resource-Level Financial Dashboard - a resource dashboard where those with relevant access to financials can see the financial impact of individual resources.
Alternatively, there would be a way to toggle between resource allocation hours and the forecast/actual costs on existing resource dashboards.
Using a resource dashboard layout to toggle financial impact would also allow the use of filtering the resource costs based on resource properties/metadata (including resource custom properties) as you would be able to in a resource dashboards, with one of the aims being to be able to see the costs of resources broken down by vendor and the resources from a vendor.