This is nice, but I see you adhere to Badian et al's interpretation of Roman imperialism, saying, "Extermination is rare. Only two settlements were razed to the ground (and in the same year - 146BC), Kart-Hadast and Korinthos."

This is definately not true. I recommend reading W. V. Harris; "War and Imperialism in Republican Rome", Oxford, 1976.
Though a bit old and though some scepticism is definately necessary reading this as well as other accounts and original sources (Source Criticism is what differentiates History from fiction), he has some points on the mentality of Romans and their treatment of the conquered. And he lists several instances where subjugated cities and populations were massacred by Romans, even in the Hellenistic world where the good Quintus maintains Romans behaved benevolently.

Good job on the guide though, this sort of thing is exactly what we need in order to not just conquer everything in two generations.