Mnemonic can work quite well for Han characters, provided you have the
right mnemonics....
The Japanese have a romaji transcription of Kanji into hiragana and
latin (at least the other way :-), and the Chinese have a romanisation
of their Hanzi characters -
pinguin (sp?) and using things like that may be quite useful.
It is a big job to do this naming and I do not myself have the expertise,
but I actually am working together with somebody who has the knowledge,
and we are about to have something ready on mnemonics for Han.
Keld