I've followed Virus's format. Check the front page for a "TODO" list (ie. add requests here, and they may get folded into the TODO list).
re: Names and Catchphrases in other languages.
As mentioned, use the change "Prototype" feature and the default names/catchphrases will be reset for all 7 languages. Customizing them after that is English only (for now).
re: custom shirts
Simple to add a customize shirt option. Each NPC can hold a custom pattern as well. I won't be supporting that.
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BTW: if someone is interested in writing a pattern import/editing tool, you can write it separately from the existing tools (like Thulinma's AC:WW editor: http://www.xs4all.nl/~aviator/acww )
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> Similar DS Release please?
The ancient AC:WW Map Editor already has NPC customization features, for what is possible. In the DS version the names and textures are hard coded, and can't be customized.