I actually hate getting the primals in Leveling roulette as well. Reason is precisely queue times. If I queue to leveling dungeon I expect I get the bonus+dungeon experience. While in extreme case I might get something like sastasha in most case sI get a dungeon that might be 2-4 dungeons lower than my highest at the moment. So usually from leveling roulette I get ast least as much experience than running the highest one, is not a bit more. Say I spend 30 minutes in queue, if I get the primal instead, the amount of queuetime+game time for the amount of experience it gives (just bonus) is worse than if I got a dungeon. In short, getting primal from leveling roulette is wasted queue time.