Quite often, when I start to generate single part drawings for my model, I will get unwanted drawings for parts I forgot to uncheck "used for numbering" in the behaviour section for that part. It would save a lot of time if you could delete single part drawings, and also have the option to uncheck the "used for numbering" while deleting the drawings. Saving having to go back in to the model and change the setting for each unwanted part.