You have to make translators feel valued and part of the project. The same holds true for artwork. In fact, it was common not to know the name of the people producing the icons. So with translations, if you have a date for release, you have an earlier date after which no strings may be changed. Translators should not be expected to check the lot out of CVS two nights before a release just to correct strings.
Few people enjoy documenting.
Good documenters are rare. Be nice to them. I had crap docs because the programmers wrote them. Now it has documentors and better docs. Ditto for artwork.