PowerBI as datasource itself

I like to use one PBIX File as single source for my enterprise model. Then I like to create different PBIX files for different departments in my enterprise. Via Deployment to the different groups I can show for each department customized reports and dashboards. see this http://community.powerbi.com/t5/Desktop/use-existing-PowerBI-report-as-data-for-new-PowerBI-report/td-p/56840