I've written here a lot about producer transparency, although I've probably never called it that. here is a good post from Camper English on the subject as it relates to Bacardi Rum and Patron Tequila.
I'm posting it here rather than in the "other alcohol" section because I think we have had more transparency from whiskey producers too, although there is still too much of the Potemkin Distillery syndrome around for my taste. Most producers won't lie if you ask them the right questions so asking the right questions is key.
Just as we often indulge in the nostalgia of "things must have been better in the olden days," so apparently do rum enthusiasts.