Currently when setting up project permissions, there are 4 levels of default permissions you can give a user:
I suggest adding a level between "Modify" and "Admin" -- the "Repository Admin" level. We already have this permission in Kiln, you just have to enable it on a per-repository basis for a given user. I would like for users to be able to delete and rename repositories in a project by default, but not modify the project itself. Letting people be "Repository Admins" by default for all repositories in a Project would be accomplish this.