I would like a way to remove a feature from a network diagram without deleting the underlying data.
Imagine a user is creating for a one time use complex network diagram from your utility network, where several features are added to your diagram during diagram generation. The added features are not selected from the map, and therefore impossible to get out of your diagram if there is a small error.
The only solution is then to dive into your Diagram template model builder for hours to figure out where it is going wrong, where instead the user should be able to easily remove the errored feature and move on with his day. Since the feature is added during diagram generation it is not possible to change your selection, especially since the user does not know where it went wrong.