It's definitely cool that Vietnam ditched the overcomplicated ideographic system, but the Latin-based script could still do with a lot of improvement. The need for multiple diacritics on almost every vowel reveals starkly how ill-fitting Latin is for a tonal language. Meanwhile, for the consonants, Vietnamese spelling adopted French/Portuguese-inspired digraphs such as qu and ph when the much more internationally recognized k and f would have been available and clearly be preferable.

I feel it's a missed opportunity. Vietnamese writing could have been a lot cooler. The ideal would have been a specially crafted writing system designed for the language, much like Hangeul is tailor-made for Korean; but even if adopting Latin letters were somehow a requirement, it could have been more thought-out than the French-imposed hodgepodge that we got.