As I said, this won't be objective, and it's coming from the perspective of a fan of the main series, and my criticisms are intended to be read by other fans of the series (after all, I don't see why anyone else would watch this). On its own, this movie might have been "okay", nothing great, but really nothing worth getting worked up over. But since it's so heavily associated with the established characters and plot line of what is my favorite anime, I can't help but find it frustrating to watch.
First of all there's the art style. Most of the characters get a jarring facelift that leaves them unrecognizable from their original iteration. For a new viewer who isn't familiar with the original art style, it might not be quite as irritating, but nevertheless it is a step down in terms of sheer quality, and definitely looks rather ugly. I was in pain when I saw Yang's appearance, but enough of that. I could complain about the visual design all day.
The art is a superficial issue that can be overlooked as long as the story and writing is up to par, right? Well it's not! A battle between the Empire and the Alliance that takes place at Iserlohn Fortress serves as a backdrop for most of the story. Well this is a good start. Are you looking forward to those interesting moments of juxtaposition, where the perspective shifts back and forth between the Empire and the Alliance as the battle develops? Well too bad. Any perspective from the Alliance side is rare and shallow. What about the complex military strategies and plans, laid out by the most intelligent commanders of the fleet? "Wait, what's strategy again?", the studio who made this asks.
In fact, the battle barely gets any special emphasis at all. It never makes any effort to explain why the battle is important, or why you should care about it within the confines of this story. Instead, the real focus of conflict comes from the most generic, uninteresting, and cartoony villain that's ever been in the series. "Such impudence!" and "How rude of you!" were his most memorable quotes. Also he looks stupid.
Really, the most annoying thing about this movie was how pretentious it felt. It was trying to imitate what made the OVA so good, and hoped that if it just echoed a few things without putting much thought into it no one would notice.
The most grating example which made me realize this was when Yang, who could hardly be called Yang due to the fact that his face and voice is entirely different, at one point says "Even though I think wars are pointless, I end up thinking of ways of winning them." Wow! That sure was precise of you, Yang! It's almost like the creators didn't know how to write dialogue for you and just made you state the most fundamental aspect of your character out of nowhere...
In summary, this feels like fan fiction. It completely misses the point of LoGH in almost every respect. Even though it has just about everything you'd expect: Reinhard and Kircheis bromance, large-scale space battles, and even some intrigue, it's all executed with no spirit or finesse, with a complete disregard for what makes those things worthwhile in this series. Reinhard's unrecognizable face serves as a good metaphor for this movie: You're -told- that he's Reinhard, and you see a slight resemblance at first, but in the end he's just an unidentifiable mutant masquerading as someone you once knew.
