These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Alternate Character Interpretation: At the end did Mothra genuinely hope to remain at peace with Battra thus the loss of the latter was a tragedy? Or did she deviously plan to take care of two birds with one stone?
Awesome Music: Once again, Akira Ifukube has blessed the cinematic world with a treasure of beautiful sound. From the return of the Maser March from War Of The Gargantuas to Godzilla's theme playing when he emerges from Mt. Fuji, the viewer is given a wonderful listening experience. But perhaps the best piece of music, however, is the soft melody that plays during the end credits, a modified instrumental version of the piece, Sacred Springs from Mothra vs. Godzilla. Another piece, just before this, Mothra Heads Into Outer Space is Sacred Springs played with a harp. Listening to both pieces side-by-side is an exquisitely pleasant listening experience.
Narm: Masako's mouth hangs open when Godzilla flings Mothra off his tail.
When the high pitched Midori dubber exclaims Niiice! in the English dub.
Adult Mothra looking like a stuffed toy with awkwardly bent pipe-cleaners for legs and bouncy rubber claws detract somewhat from her majesty...
It seems like the Battra larva can hardly walk.
Yuzo gets a horrible dubber this time who mixed up distress with whiny, though Akiji Kobayashi's Japanese performance is equally tongue in cheek.
Special Effects Failure: When Mothra bites Godzilla's tail, the Godzilla tail prop is obviously not sewed shut at the bottom.