It's very difficult if not impossible to move Japanese to Romanized spelling completely as most complex compound words are constructed out of Chinese ideograms,

It's very difficult if not impossible to move Japanese to Romanized spelling completely as most complex compound words are constructed out of Chinese ideograms, and make sense only based on their spelling. The On-yomi (chinese reading) for many characters is identical to that of entirely unrelated characters, because Japanese has no tonality. Most of these words cease to make sense if spelled phonetically in Latin characters -- their spelling is their definition. As an aside, this phonetic ambiguity allows for very entertaining untranslatable puns.