Fitting and enabling ADSB has to have some positives, so I don’t think it’s a waste of time. The elephant in the room is mixing IFR and VFR at night on routes that have no (or totally inadequate) separation; this is inside controlled airspace - it should be controlled! The whole point of separating traffic by level, speed, direction and/or SID/airway/STAR is that if ATC goes down (or is distracted) or has to revert to procedural separation, aircraft are not immediately going to start hitting each other.