A good show, I'm addicted after watching Dragon Rising. Still on season 7 of this but gosh, do I find Jay irritating!
Kai was kinda jerk earlier, but Jay has taken over. Wonder what Nya sees in him! Cole is a better person.
Anyways, Master Wu, the ninjas and the additional characters are engaging and each season has a lead villain, around whom the entire season is built, with revelations throughout and some predictable developments, but the stories are well paced, and proceed quickly. The Ninjas are clumsy, goofy, silly, sometimes petty, and often downright stupid. And it bugs that they don't plan, jump in recklessly, and often do the dumbest things, and don't learn from their mistakes. The feminine is under-represented and so far, I haven't seen non-binaries, but the diversity of character and nature and background of the ninjas is a good enough beginning to reflect that diversity is good.
There are some good dialogues that can be messages if the watcher so wants to register, that are motivational. Humor is peppered throughout, and the world building is okay, though I found Dragon Rising more engaging and attractive.
A good watch for kids who can follow the developments and reflect on the messages, given the fast pace. For children, I'd recommend not binge watching and taking it slower.