This is how it is now in testing
Root Site collection
-Provisioned PWA with Project Pro Published Projects
--Project SharePoint Site
(all in project web app db)
I was thinking I wanted to do this
Root Site collection
-Provisioned PWA with Project Pro Published Projects (in project web app db)
--Project SharePoint Site (in dedicated project sharepoint site db)
The reason for this is I'm pretty sure my users are going to totally mess up the use of deliverables for some time and I didn't want them contaminating the project web app db.