Hello,
couldn't you just translate the dialog boxes ?
That would very much ad up to immersion,
and it ain't so much text as if "everything" was translated ...
Compared to "everything", the dialogs / dialog boxes alone wouldn't be that expensive to translate ... especially since most of that stuff still exists. (Translation was stoppede somewhat around or shortly after MOTU, if I recall that correctly.)
The only bigger efford would be to translate into Spanish / Portoguese languages, so that for example Brazilian players could read the dialogs - at last - in their own languages, and thus and better understand the game world ...
Alrik