A bit off-topic but I don't like how the OP treats atarimae & miryokuteki hinshitsu (typically translated as must-be & attractive qualities) like proper nouns w

A bit off-topic but I don't like how the OP treats atarimae & miryokuteki hinshitsu (typically translated as must-be & attractive qualities) like proper nouns without a translation, while they are just how Dr. Noriaki Kano explained them back in 1984. Those conditions are collectively called the Kano model [1] and treating them as untranslatable proper nouns do not help anyone. [1] https://en.wikipedia.org/wiki/Kano_model https://en.wikipedia.org/wiki/Kano_model