Wasn't there some issue about hard saddlebag interference?
Yes...... You are correct, Bruce.
The only difference between the newer hinges and the original ones is a small elongated plate welded to the bottom of the mounting bracket. This plate moves the lower pivot point for the pneumatic strut down and forward far enough that it runs into the lid of the hard saddlebag.
Except for the ones that the owner cut a hole in his hard saddlebag (yes, I saw it first hand) to clear the bracket, all of the “Newer Hinges” are on vehicles with soft saddlebags or no saddlebags.
The change in the hinges was absolutely not needed by GM. It did not change any of the geometry of the hinge or actually improve the lid opening. All it did was create havoc in the configuration management for the deck lid struts after the product line shut down.