kingCH
By writing about a goddess who can intervene however she wants, you are creating a "Deus ex machina" that will destroy the coherence and logic of your story. That is to say: The MC is about to win after a thousand chapters where he struggled and suffered, but the goddess comes and loses ... This is why many stories where a ROB or God interferes with character development tend to be abandoned as they become absurd. Eliminate outside meddling that adds nothing to the story.
Essence of Grandmaster - okay Grandline - .....doesnnt suit the world that much and gives too many benefits. Essence of King - Should be called Emperor and also needs certain nerfs Essence of Undying Will - Weird name for the benefits following .... I was interested in the novel until this Essence part appeared which kinda makes it stupidly OP beyond reason. Even OPness has limits. The Grandmaster Essence alone is already a good golden spoon for the System in that World.
This sounds like an amazing story, but it has, I'm going to lose interest, and never finish written it all over it. His ability are too OP, I know you said there are going to be many reincarnators with their own abilities, but even still too OP, which it mainly has to do with you having ROB or Gods interfere in the story which honestly it's a Bad Idea. Personally, I do like what you're doing it's just that when you combine those 2 points together you get a fic that never gets far. I really hope your Interset in this story stays strong because I'm liking it so far.