Another Western Godzilla, eh? All they have to really do is not try to make the big G into something else, just let Godzilla be Godzilla. He doesn't need babies, or to look like an iguana or be completely scientifically plausible. The comic book movies have shown how to do it, just take the extraordinary as given and just make sure it gets sensibly integrated into the whole.
Have you seen Monsters? I know it was another giant monster movie by the same director, and the impression I've gotten is that it basically got him the Godzilla gig.
Was that the immigration metaphor movie? Yeesh, that might tamper my enthusiasm.