What I would like to see is the option of collapsible groups/folders of projects in the "Projects" pane. If you're familiar with Visual Studio, it would be equivalent to the "New Solution Folder" option there.
For example, if you have a workspace containing projects for a media player and plugins then you might group the plugin projects, something like this:
media player project
plugins folder
audio folder
1st audio plugin project
2nd audio plugin project
video folder
1st video plugin project
2nd video plugin project