I would like to add my 2 cents to the pot.
Using the outliner can be very useful.
What would make it a killer tool for me would be the ability to save different “views” with each view having a different set of columns or filtering in a different label or tag.
This would allow me to have a standard spreadsheet like view for looking at overall status
A timeline view for planning the order of events
Editing views showing only the outstanding editing work etc.
Other views with a limited scope.
Being able to set a custom view or choose between my previously created views would save a lot of time rebuilding the outliner view to suit different tasks during the development of my works
What are other people’s thoughts?