[MarcinK]

Have you tried the following:
- In Project view you can 'Focus' on a project, or a project group, which makes all other projects and their actions hide
- In Contexts you can select to only show 'Active' contexts, which limits the list to contexs that have actions
- You can Hide the Toolbar and the View Bar
- You can save such configuration using a Perspective

Cheers,
Marcin