Allow a user to create new Tab groups which can be set up as working sets. For example, a 3D Graphics tab could contain Lightwave, Photoshop, Zbrush, Seamless Texture Maker -- applications normaly used by the user doing a 3D project. Or programming

When working on a project, there are certain programs that are used, and many that aren't. Separating these out to a tab where the user can find each quickly would be convenient. Maybe call it "Work Environment Tabs".