Increasing Project Team Productivity
This article from Rob Maher focuses on how to increase productivity. It discusses how changing a project staffing model could increase the productivity of project teams (PDF document). There is published evidence that short-lived groups of people brought together for a project are correlated with lower productivity. His view is that in an agile world, teams are permanent and the organization optimizes at the team level. Permanent teams enable consistent estimation, which is not possible using the matrix approach.