In a LIST view if you expand a Project panel you will see the projects window on the right-hand side of the screen.
In that window, there is not ID number displayed, whereas in it was a Task the ID is visible.
It will be great to have the Project ID visible there and generally more often... e.g. always next to the title.
We do rely a lot on this ID number as all the working folders (for each project) are named with the ID.