What is something you would change about kny?

I'll go first: remove Akaza being able to regenerate his head. tanjiro cut off his head,and in my opinion,it should have ended at that. The other two upper moons who we see that don't die from their head being cut off actually have valid reasons. akaza has nothing,no other demon to share the body with. No "clones" or main body that needs his head to cut off. It was just him. I think "being able to regenerate the head" should have remained something only muzan can do. does this come from the fact that I wanted tanjiro to have a clean, undisputed victory for ONCE? Maybe,that should have been tanjiro and giyuu's win.