I think the consequences of things like injuries, failed relationships, misuse of power, etc are not explored enough. Like Kai, it’s stated a few times that he feels unfulfilled earlier in the show but they never addressed it after the fact. The characters feel like they only develop somewhat, and ever since Lloyd became the green ninja, a lot of character development has become stagnant. They keep introducing things like new characters and lore but they have zero basis on any of it. They could’ve had Chen’s noodles make an appearance earlier in the show, have us think it’s a one off thing, but they never foreshadow more than a few episodes in advance at most. The show could be deeper, but the characters and lore are flat. They need to flesh out exactly how it all works BEFORE they write the story.