Localisation and Language support for Kindle 3

[myomeriko]

Hello.
I just purchased an "international" Kindle 3 and investigate the level of language support they offer for the languages they claim to support.
I want to classify the level of support for each language (English, German, French, Spanish, and other Latin character based languages, Cyrillic letter based languages like Russian, Greek, Japanese, Korean, Chinese) from "perfect" to "poor" and make a wish list of enhancements to be submitted to the Kindles development team.
I already found a lot of issues. For example, Russian and Greek does not correctly display Title and Author names in the Home screen. Also there are issues with special letters and problems in the search functions. I also expect Font/Unicode issues.
Can anyone contribute to issues in languages I don't know (Russian, Greek, Japanese, Korean and Chinese)?
Thank you