Hmmmph, I heard an interesting talk by author of "Triumph: The Power and the Glory of the Catholic Church" touching on how Roman it is in spirit and function. And how Protestant types of Christianity, although they may appear to be going "back to basics" of Roman era Christianity, actually tend toward a quite modern mold of Utopianism that Roman citizens might find alien. So I guess any Roman or Constantine influence may be largely found Catholic or Orthodox branches of Christianity.
Just brainstorming about macro issues, like relations of religion to government or to individual. Author Crocker seemed to say the way the Catholic church does an ambiguous dance between itself and sinning people or governments (accepting yet prodding... the inquisition never being the norm) ia actually an effective way of dealing with problems evolved from long Roman experience (of worse ways of handling). "Sin" may be furiously condemned, but clear cut cases with victims are already dealt with in secular gov't, and as you go out in the spectrum of semi-victimless "sin" the softer approach maybe being wise.
Contrast this with the last few hundred years, where Protestestants or Marxists or even recent environmental extremists sought to get full government enforcement of not only the obvious crimes with victims, but a whole spectum of "sin" that is probably bad, or possibly bad, or maybe only speculatively bad. This even backfired, as close legal binding of Protestant church with state led to loss of legitimacy in the eyes of the public... same with Marxist states.
So maybe the old Romans peering down from heaven or where-ever are shaking their heads thinking the world has gone off track from the gift of their civilization. Just as we have modified their row toilets to dysfunctional follow-ons like the low flow toilet, we have also gone from their modulated handling of sin to over/under correction. I'm sure they would admit their heritage could be improved upon, but we may still have not completely returned from the dark ages digressions. Let's face every problem by first thinking how the Romans would handle it, and only improve on it when and if it really makes sense (grin)!