Public Comment is a vital part of our multistakeholder model. It provides a mechanism for stakeholders to have their opinions and recommendations formally and publicly documented. It is an opportunity for the ICANN community to effect change and improve policies and operations.
The Panel has decided that hiragana and katakana do not generally produce variants (except in the cases where the kana are identical). But do you really want a situation where one registrant could have a domain name in hiragana, a different registrant could have the same name except rendered in katakana? (And, for that matter, a third registrant having the same name in kanji and a fourth registrant having the name in romanji.) This would seem to be an invitation to DNS Abuse.
The Panel may wish to reconsider their definition of variants.