One of the best ways to drive performance of your projects in your organization is to publish the latest reports, trends, analysis and results on an internal website for your stakeholders, PMO and team members.
One of the best ways that we have seen to do this since our acquisition by Oracle in 2008 is to publish your project portfolio data through Oracle BI (OBIEE) so that you do not require folks to log into a P6 client in order to gain visibility into resource allocation, resource availability, ROI, project budgets, etc.
By leveraging the Primavera P6 Reporting Database from Oracle, you can persist and offline large data sets of all of your company's project history and then report on it with super fast access and analytics from OBIEE (Oracle BI Enterprise Edition) without any negative effects on the live production project system where P6 transactions are occuring.
I have a screen capture of an example of what these dashboards can look like when you build metadata around P6 data: