I believe that the series Avatar: The Legend of Korra is lacking in some aspects which render it a complete mess. Its only worth can mostly be attributed to its title of being what succeeds Avatar: The Last Air Bender, which was a well received story.
Avatar: The Legend of Korra feels a bit stale to me because of what I perceive as a lack of imagination. An example of what I just mentioned can be seen in the part where Amon is forcing benders to surrender their powers; there could have been a scene added in which the effects of Amon's abilities were shown in some way, but that foolishly didn't happen. One other glaring issue that exists alongside the aforementioned "lack of imagination" is the audio team for the series which clearly isn't providing proper support for the various scenes. In some instances, some sounds which would signify different moods or reactions are totally missing, and in other instances the audio can bothersomely interfere with the dialogue.
Apart from the specific details about its production, the story seems to be one which is poorly represented by an unsuitable protagonist, Korra. Korra has few acceptable qualities; her one feature being a lack of prudence which allows for some possibilites for adapting the story. This one quality of impracticality isn't however enough to replace the others which her predecessor (Aang) held - compassion, wisdom, and more. As a female, Korra doesn't leave much of a likeable impression either, with many of her actions bringing about distaste.
With all of the issues which I've encountered expressed, I obviously conclude that this series isn't a worthy one for it to be compared with Avatar: The Last Air Bender. The story of Avatar: The Legend of Korra has room for improvement, with much of the character and plot development remaining unaddressed as of yet, but I cannot see the future of it as one which is very fruitful for serious viewers.