I think it most convenient in to the admin panel was able to choose which fields to be displayed and where.
For example: if I create a custom field you could to add the RadioButton where to be displayed?
Admin->settings, you can ask a question: do you want to show statistics? (checkbox)
Admin->settings, you can ask a question: is the sorting allowed?
Admin->settings, you can ask a question: is the sorting allowed? or sort by... (checkboxes) fields?