I don't think it's necessary because the Criminal Code, which is the parent authority for ETAs, already delegates authority for granting ETAs for medical reasons, judicial proceedings, and attending court inquests to the Correctional Service of Canada. The Criminal Code's not being changed by Bill C-483, so that authority does not change.
I think we need to rest assured that the effect of Bill C-483, after the government's amendments, will be to ensure that the warden, Correctional Service of Canada, maintains authority for granting ETAs for judicial proceedings throughout an offender's proceedings, because, quite frankly, a warden cannot disregard a court order. When an inmate attends court, there's either a subpoena or some kind of court order, and there already exists within the system the authority for granting those temporary absences for that purpose.