Yes, I think there was an added value, maybe not mystique, to the BN reissues in the mid-80s. There was a big fanfare and a marketing campaign that highlighted the history of the label and it did coincide with the jazz revival that included landmarks like the film 'Round Midnight' which featured BN artists.
My perspective is one of someone very new to jazz at that time. Maybe more experienced listeners knew their Prestiges as well as their BNs. I knew more about labels that Mingus LPs came out on and Black Saint at that time...reflecting my two entry points of Braxton and Mingus