Please add a global setting for admins to block the ability to exclude objects from groups. There should optionally or additionally be an instance option to enable the ability to exclude members in a group instance. I'm a BIM manager, and I see how often people accidentally delete elements from a group. So often. This is not a feature that is often used. It's rarely used, while excluded elements happen on our project constantly and create issues. It creates more problems than it helps to resolve.