About Morellonomicon..

Why does the grievous wounds debuff last 8 seconds? I feel like that's a very long time in League, and quite frankly I think it needs to lose about half that duration. I dont mind the fact that it has a healing debuff, just why does it have to last an eternity. Just played a game as Aatrox against an AP Mid who typically builds Morello first item, I would kill her every teamfight but the problem was even though I was no longer taking damage from her spells, the healing debuff was still applied so i was losing alot of healing from a champion who has been dead for over 7 seconds... dead.. I really hope they adjust that passive in the future. I also find it frustrating for an adc because the debuff is present through the entire teamfight.