As of now, using BIM360, all of the permissions are in the hands of the project administrators. We are an engineering firm so it's not likely for us to be the host or admin on a project since that roll is typically filled by the architectural firm. It would be nice to have more authority over the permissions and control of our own model rather than having an admin from a different company oversee it, giving them the ability to change it anytime.
What if the project host/admin set up the project team and permissions like it is currently, but they would have the option to give each project member (or company) control over their own models entirely, removing their own access to the permissions over that file in regards to editing or deleting.
For example, say the architectural firm has designated an administrator to set up the project team using BIM360. They send out the invites to the project and start setting up the file permissions for each contractor, allowing everyone to view the other projects in the model. Next, the admin makes a selection that transfers the control of permissions to delete or edit files/models to the engineering firm. This makes the engineering firm the only ones in control of anything other than viewing and linking their model.