Scoping the procedure step keeps you from getting dialog flows and hence other procedures of the people.
The Delete protection that is requested for the procedure step is always downgraded to Modify. However, you can still:
Delete all views that are not matched using a dialog flow.
Delete the fields from a screen.
Delete the statements from an action diagram.
Do not get full expansion on the procedure step because full expansion brings in all nested action blocks with Delete protection and prevents others from using the action block in their PrAD.