Well, the Packards are not all that bad if they last 30-40-50 years with no maintenance and no weather sealing at all. I bet dielectric grease on them would make the last 5-10 years longer.
The bad use of the Packards in these cars were to carry the heavy current loads (battery and alternator) and they weren't rated for that so it was really a mis-application. If you have the early A/B body with the screw lugs instead of Packards for the high current lines, you don't have that issue. It is telling that the ammeters used some big ring lugs and the small Packards were used in the firewall for the same high current levels.