alierak has already covered why you should -- just to add some input, the config files in our production environment are protected in the same way as what you linked to, so you don't need to worry about things needing to be decided by TPTB -- we'll have to do it anyway.

The other thing, you might want to put it into either doc/config.pl.txt, or in LJ::Global::Defaults if you're really not sure where they should go.