'Enable menu for this group' setting does not appear in the 'Manage Fields' form

The setting 'Enable menu for this group' is now injected into the node edit form using hook_form_node_form_alter(). This is not ideal since the placement of the setting cannot be changed by the user. Depending on the weight of the other fields on the page it might for example appear right at the top of the node form:

It would be nice if this setting would appear amongst the other fields in the 'Manage Fields' form of a content type so that the user can position it at will using drag and drop. This can be done with hook_field_extra_fields_alter().

You can find a nice example on how to do this in the Pathauto module.