How is Anguirus able to hang onto King Ghidorah's neck while airborne for so long? He's already done it in 1972...
Again, with Anguirus— why is he such a powerful and ferocious adversary in this film while he was a punching bag in the 70s films? He's had twenty-plus years of training with Godzilla to level up.'
Minya/Minilla delivering the final blow to King Ghidorah is considered the kaiju equivalent of a young prince or lord delivering the death blow to an enemy in a rite of passage to manhood.
The monsters, namely Godzilla knew where the Kilaak base was. If you think about this, that means the original Godzilla knows where and what he's targeting.
It's been explicitly stated that Godzilla absolutely hates humanity (with only a few notable exceptions) due to them mutating him into a monster via nuclear radiation. You think a giant monster mindlessly rampaging across a city is bad? Try dealing with a monster that not only knows where he is and what he's doing, but is deliberately trying to wipe out all of humanity as an act of vengeance.
'Godzilla Final Wars' is the only film where this is stated. That only applies that particular incarnation of the character. There's no evidence that the second Showa and the Heisei Godzilla flat-out hates humanity. And If Godzilla hates humanity so much, why is he always rushing to its aid starting circa 1971? The Japanese songs about the Showa Godzilla even state that "He goes anywhere for the sake of peace" and "I'm Godzilla! I'm everybody's friend!"
The second Godzilla initially did, too. Godzilla said as such during its conversation with Mothra when Mothra reached out to Godzilla and Rodan for aid against King Ghidorah.
