Dear Mamerca, as for Caratini I'm sure that he wrote a historical fiction trilogy on Caesar, although I could find only the first one translated in my language (Italian), whereas the other two volumes are in French, but I was thinking about buying them. I'm curious to see the way he followed Caesar's life.
So, if he wrote a lot on Alexander... he was trying to follow Plutarc's steps! I didn't know it.

As for Augustus... all I can answer with is that the guy was very subtle (a bit too much for me), so he might well have had a good hand in making the man Caesar disappear beneath the myth Augustus himself was creating (if I'm not wrong some historians proposed that he was also responsible for the disappearence of Caesar's Oedipus and his other young works, is that right?). And this - honestly - doesn't help to make him any more likeable to me. I tend to agree with an Italian writer who - after a biography on Caesar (not an eulogy) called "Caesar the big player" - wrote one on Augustus, called: "Augustus, the big rooker". ;-)