It is an amazing series despite the production team's struggle of a finalized deadline from Nickelodeon. That outside obstacle should not reflect the plot and the timeline; they did the best with the time they were given. Also, if the problem is the plot, Korra looks at the evolution and other side (more spiritual) of Avatar. The character contrast is purposeful in showing another dynamic to the show than a repetitive character personality. Overall, an amazing show based on Avatar but it is not a copy. (Tbh though Zuko having a British accent is annoying but General Iroh makes up for it 😤)