In short, it seems to make the Latin alphabet work for Japanese. Perfectly fine if Japan uses it as its Latin-based writing system (discarding the native ones),

In short, it seems to make the Latin alphabet work for Japanese. Perfectly fine if Japan uses it as its Latin-based writing system (discarding the native ones), or to transcribe it for academic usage, but unhelpful as a Romanization, which is mostly intended to make it easier for people completely unfamiliar with the language to pronounce names and to learn the language.