This film is infamous for its full fledged alien (fossilised space whales appear in SEED) in the Gundam franchise, and I agree this I a bad thing, Gundam introduced human antagonists in order to make them more relatable and the conflicts ambiguous. This is an alien invasion story, while the ELS were oblivious to their attacks at first, this is the problem you cannot sympathize with the ELS properly as they have a different concept of morality, you can sympathize with the oppressed spacenoids that made up Zeon, the abandoned humans that became the Vagan, and ZAFT being victims of racism.
Secondly, Feldt declares her love for Setsuna out of the blue, although I like the pairing it just wasn't introduced right, it makes sense that they have been comrades for a long time but there wasn't any build up to it, she just confesses randomly and worst of all, their relationship is left unresolved.
