>Gamera '95 is too friendly
>Gamera '99 is too hardcore/scary/badass
>Gamera '96 is just right, balancing the friendly/heroic look while also being a bit more hardened-looking
That having been said, if I had to choose one of the trilogy's designs for a new movie with a regular "Gamera is the good guy" story, and it couldn't be '96 for some reason, I'd go with '95 over '99. '99 is a great design, but feels a little too specific to Gamera 3's plot.