Once again, some really cool ideas that are completely wasted in execution. I love the reveal of the Exif as a religious death cult worshipping Ghidorah as the destroyer of worlds. And I love the conception of Ghidorah as a mind-bending Lovecraftian horror whose very entrance into our realm upends the laws of physics.
Then, they decide to spend an eternity of runtime with the "fight" that consists entirely of Ghidorah gently squeezing Godzilla, while Metphies babbles on with his vague philosophical wankery, and the human characters shout repetitively about how what's going on makes no sense (no kidding).
Throw in an embarrassing "romantic" subplot with Haruo and one (both?) of the twins, and a tease of Mothra that doesn't manifest except as a shadow in a dream sequence, and you have a huge pile of wasted potential.