So an unexpectedly common question I've been getting from people moving from MSProject: "Can I get all the project tasks in a list view (no matter where they are in the WBS) so i can edit them Excel style?

The obvious answer is yes (since they'll all have the same Top Project). The problem is OOB ServiceNow interfaces are very biased to a strict "which record is this record's parent" paradigm. The "Project Task" tab on the Project Form for example, is only showing the top level tasks, not any tasks below them.

Answer to this problem is a VERY simple UI Action that I placed on a Project's form links.

When clicked it opens all nested Project Tasks in a list view on a new tab.