First of all, I'm a fan of the YYH anime, so was hard for me to not compare this mini-series to the anime. The story changes made was understandable to me. Especially, when it was obvious that Netflix wasn't going into the Dark Tournament saga.
There are some things this mini-series fail to deliver. I believe it was due to it being 5 episodes. One of YYH anime's highlights was the resonating backstory and motivations of the main antagonists, which the anime builds up as the story moves forward. But this mini-series failed to do that. They tried to do a quick retelling of younger Toguro's backstory with just few minutes of dialogue during the last episode. But that's weak. I think younger Toguro's backstory itself deserves one whole flashback episode. It might've made the climax battle and ending more emotionally impacting. In other words, in order for me to care about the deliverance of a tortured soul, I need to get to know the tortured soul first. If not, I won't care and don't know how to care about the deliverance. And again, this mini-series was just 5 episodes, maybe that's why they're forced to only use dialogue.
I wondered if this series was meant to be a one off and season 2 was never considered. It seemed to wrap up so nicely. Hopefully, it performs decent enough for a season 2. I want to see how Netflix would do Sensui (this antagonist is so emotionally scarred that he 7 personalities inside him). Please make at least 8-10 episodes if there's season 2, like One Piece or other Netflix original series.