Not really AtG, though he gets a mention, but a series of lectures by Mary Beard on Imperial Roman iconography and its legacy. Many of the considerations of identification and purpose overlap with Hellenistic concerns (obviously, since the model for Augustus was the Hellenistic Monarchies).
Oh, she doesn't like Alexander, does she? He's a great big murderer. Yet no mention that Julius Caesar wasn't exactly pure of hand. What about the cold-blooded pursuit and execution of the pirates? Maybe she just meant that Alexander was responsible for more deaths, but that might be debateable considering Caesar's military career was much longer than Alexander's.
It is trendy to not like the great killers of antiquity, Mary is not keen on any Roman Emperors either; is it any wonder intellectuals generally find themselves purged? Rather than anything specific, I find parallels between the future use of the Augusti and the Roman use of Alexander interesting, and pin a name on the sculpture is also an Alexander pastime.
When you think about, it free-choice is the only possible option.