Mothra: I love this Mothra design. It strikes me more as an updated Showa design than a blending of the eras. I loved the look and the execution. Mothra fought and behaved like Mothra should. I especially loved the opening with Mothra and the fighter jets. Superb!
Godzilla: For starters, the head no longer bothers me. I'm glad they added a scar to his chest, which I felt was a nice touch. That sends a clear message to the audience, which is: "Hey, remember the Absolute Zero Cannon and how we bragged about it being very dangerous? Look! It left a permanent mark on Godzilla! We totally didn't forget about it!"
Kiryu: My favorite design of the Kiryu character.
The Battles: It felt like the entire movie was centered around these fights, which will be a gripe of mine soon enough. But I felt they were shot and executed nicely. I wasn't really bored whenever the monsters started brawling.
The SFX: Ah, Toho. You're learning! Some of the best Toho Godzilla SFX scenes took place in this movie.
The Score: It certainly has a huge Godzilla vibe to it. Very memorable.
The Humans: All of 'em were pretty blend, which is a shame. They could've continued Akane's story, since she actually had something called character development in the last movie. Oh well, it was probably for the best because...
The Plot: This is essentially a remake of its predecessor. Don't get me wrong, I like it better, but when all is said and done, it has a huge, "Been there, done that!" vibe to it. The humans were abysmal in their development and the plot was centered around just the monsters fighting. That works if that's all I want, which depends on my mood, but it doesn't make it a rewatchable film. I'll watch it again because I'm a fan, but only, like, once a year. That's a travesty!
The Atmosphere: Y'know how you know you're watching a movie instead of watching a television show? Better yet, y'know how you know you're watching, say, The Return of Godzilla or Godzilla 2000 and not an episode of Ultraman Tiga? It's the presentation. The film content should look more polished, more larger than life. The television format looks like it could've been shot by your neighbor. That's my main critique with most of these Millennium films.