Priority is useful for... Prioritization. One can autoassign a priority for an enum classification. I've never seen impact/urgency/severity as being anything

Priority is useful for... Prioritization. One can autoassign a priority for an enum classification. I've never seen impact/urgency/severity as being anything other than different ways to say priority or overcomplicated ways to derive priority. Then again I've never wrangled an absolutely massive bug/ticket queue.