I'll never understand what people like about Beginnings so much. The episode looked great but everything else about it was awful.
The idea that bending just came from lion turtles was lame and really undercut the idea that people learnt how to bend from their environment and just became "Eh, lionturtles did it", having no explanation about why some people couldn't bend would have been better than the shitty explanation we got. Similarly the Avatar cycle didn't need to be explained, it was better when it was some mysterious cycle of people with super powers who helped keep the world in balance rather than "Oh it was just the spirit of order" which in itself is retarded that it's basically "the spirit of goodness" when really order and chaos are 2 neutral things instead of a good and bad thing and it also pretty much retconned the idea that it was a spiritual connection to the experiences of the past avatars that lead to the Avatar state and instead it was just some spirit giving the Avatar a power boost. What was the point in any of the whole chakra thing if it was just a lame ghost instead of any connection to anything?
The altering of the spirit world to its current kid-friendly wacky fun land filled with goofy spirits from the world of spirits it used to be was really emblematic of Korra's almost Lucasian approach to taking anything cool and mysterious that people liked about the original series and dumbing it down while shoving it in the audiences face while also missing out on what made the original show so great, like how they did with bending, the setting, the characters, the wretched fanservice and the "mature" themes of AtLA.