In this review of the last movie, I will leave out the art and sound parts because they are similar to the first and second one so instead of repeating myself, I will focus on the story and the characters.
As a conclusion to the film series, it did great. First mention would be the battle scenes. I stated in the second movie that Gundam should be more battle oriented (like developing the war aspect of the story). And that's what I got. Politics were kept to a minimum in this one and it was rather well done except the Hitler kudos (yeah Gihren Zabi, I'm talking about you). How come he is successful with his superior race speech? It's like a bad attempt at creating the ultimate villain but failing because he had no personnality.
Another thing that caught my attention was the "Newtype stuff". It seems to me like an equivalent of the Force in Star Wars (Gundam and Star Wars really got something in common). Newtypes are like Force users, some have a stronger affinity with the Newtype Force and start developing abilities (Like Amuro the chosen one). I didn't mind at first because it tied well with "Humans adapt to their environment". However, the possibility of a "Newtype afterlife"... it was weird (no spoilers here).
It should be taken into account that a compilation movie has to cut out minor plots like the relationship between supporting characters. I liked how Sayla Mass and Char displayed more background story but what bothered me was the relationship between supporting characters like Lieutenant Bright and Ensign Mirai or Frau Bow and Hayato (not spoilers). They made a weak drama impact and it was hard to understand because of its underdevelopment and the short time allowed.
I also have something to say about the nudity in this film series. Really, what's the point? I know it's no more than two minutes but still, it felt out of place. What about giving more character depths instead? Though that's just a personal thought.
All in all, the third movie was really good. The story itself had a good conclusion, not some "to be continued bullshit". I didn't feel the necessity of watching the entire Anime to get a better understanding but it's true that some characters still need more scenes. I'm just nitpicking in this review because there wasn't any major flaw worth noticing.