Re: Quizzes and Tiki Scores
It looks like the code to reflect use of a feature in the user's score is in lib/tikilib.php. The score admin page files would also have to be modified if you want the admin interface to include quizzes. If you're up to it, you could modify these, or submit a request for enhancement at dev.tikiwiki.org and maybe it'll make it into an upcoming release. I agree with you that it'd be a good idea, and actually other feature participation should also be considered.
-- Gary