Currenly, desktop/apps menu shortcut is created with the single name (UnixNativeUtils.getDesktopEntry()):
....
list.add("Name= "+ shortcut.getName());

Shortcut set/get name implementation:
public void setName(final String name) {
        setName(name, Locale.getDefault());
}

Shortcut.setName(final String name, final Locale locale) {
if (name != null) { names.put(locale, name);} 
else { names.remove(locale); }
}

Likely the better behaviour is to have the following impl:
public void setName(final String name) {
        setName(name, new Locale(""));
}
and
public String getName() {
        return getName(name, new Locale());
}

Then in the UnixNativeUtils.getDesktopEntry() we can use something like:
Map <Locale,String> names = shortcut.getNames());
list.add("Name= "+ names.remove(new Locale(""));
for(Locale l: names.keySet()) {
            list.add("Name["+ l + "]=" + names.get(l);
}

We should also keep in mind, that current shortcut Windows/Mac OS X implementation is supporting only single locale.
PS. Not to forget to fix the creation of FileShortcuts in nb-base in that case, since it is created using localized 
value only. So as the result, if installer is running in ja locale, then default name (Name=...) would be in the 
Japanese language but there would be no "Name[ja]=..." string in the .desktop file at all.