Proposed changes to the article so as to avoid reversion struggles    That possible vowel inventories be exanded to  distinct vowels after Vance   That discussion of diphthongs be expanded after Vance   That discussion of J r be exanded to include the possibility of  two r phonemes and  more allophones than the ones described in the article Source would be Trubetskoi book and Labrune article  I would point out that Vance is about the only Englishlanguage book we have that is devoted to the topic of Japanese phonology and it is a standard source on the topic even it is limited in its approach by traditional phonemic description and doesnt make use of alternatives such as natural phonology and articulatory phonology  Speak now if you cant live with these