I think it would be great if season/non-season locked mobs unlocked themselves after the mob clears its aggro and is back to full health. Ran into an issue where a non-seasonal player in undercaverns would aggro several mobs, feign death, and move on to other mobs. I don't think it was anything malicious, they just pulled too many to handle but then it locks others out of progression. All we could do is evac and run back through the zone again. In some situations there's no other way around than to just wait for the mob to unlock and hope it doesn't get locked out again before the timer is up. I know 20 mins (or whatever it is) isn't that long in the grand scheme of things but I think this could be a nice middle ground.