The Romans did borrow a lot from the greeks, but they weren't without their own cultural developments and contributed to the western philosophical tradition. Amongst other things including no shortage of architectural and administrative achievements that formed the basis of western traditions of architecture and law.
I have difficulty applying the term "evil" or other types of judgement because that would be applying my 21st century western liberal sense of morality to people that could not possibly have shared the same understanding.
There's nothing more 21st century liberal than the concept of relativism, it seems to me, my concept of "evil" and moral judgments comes from somewhere else entirely, it seems to me, although so we're there, is IMO.
And they pretty were without any cultural developments, what was their philosophical tradition? Stocism? The notion of, stoicsim? Not sure I'm with ya there..
Or Neoplatonism... er?
Their architectural achievements were mostly just kind of a maxed out version of Greek ones, as well, just a change in scale. It was still the dome, the arch, the, whatever.
As far as canonical "Roman law" well I guess um Italy,, a lot of France.... would not exactly say that's everywhere, plus each of those places give their own spin anyway.
I'm sure many would contest this (given the contrast in strict legal systems) but it has somewhat of a presence of some kind in Anglo-Saxon England as well as pieces of America IMHO, although it not present in the same way, but more by reference to them in those places as a standard for "classical civilizations" and such.