I'm in the process of selling my n810, so I don't have a chance to implement this, but it just struck me how easy it would be to implement a pinyin Chinese input method, with something like VIM, since an input method is basically an index. You would just need some shortcut keys to bring up the index, jump to the appropriate section, and pick the word. For instance:

"Alt tab" to VIM
type "han4", go to the relevant part using Vim's buit in search
type "5" to select the 5th character.
type "yu3"
type "1" to select the first character
Enter to quit and copy selection to clipboard


The only problems here are that, when I played with it

1) VIM didn't seem to support unicode
2) ... or the clipboard

So that I could not send letters to the clipboard from within xterm, and when I copied it manually, it came out a non-unicode garbled mess. But if the above two problems can be solved, then this would be an easy way to get IME's for basically all languages.