so my one big complaint is that there should of been 10 episodes instead of 8, for there were parts just like the movie that felt a bit rushed, but even with that feeling the director's and producer's did great job making sure that the important parts of the main storyline were focused on mostly. Also because the budget is not of what a marvel movie is I do not mind the skipping of some of the side activities that were in the animated series.
cgi was fine, fighting, music, visuals were all on point, you actually felt the use of bending blending in with actual martial arts, all the actors over each episode grew more and more into their characters, they actually showed the strength and destruction of fire benders powers.
I personally do not like for live adaption to be word for word scene to scene the same thing, as long as the most important parts are done right and they accomplished that