I only give this anime a low score because i have ONLY seen the first movie, but I am going to watch all 3.
In all honesty I love Gundam SEED/Destiny, but I did not have the time to re-watch the entire series, so I figured I'd watch the movies. The first movie is....well terrible, in comparison to the actual series, the whole movie is just a bunch of clips from the series, with a few new scenes here and there. If you have not seen the series, I would recomend watching it instead of this movie only because they cut out so much from the story that you are not able to connect with the characters! Its seems that all these caracters have no depth to them at all, which is not the case! The story suffers much as well, with so much cut out.
The only reason I finished the movie was to see then new scenes and see if I would learn something new about the characters or plot, but sadly that was not the case.
This movie crams about the first 20 episodes or so into a short lifespan(95min), so what would you expect?
bottom line, make time for the series if you have not seen it and skip this movie. You should really only watch this movie if you are a die-hard fan and you MUST see anything Gundam SEED/Destiny related.