Let's see about some things Roman:
Religion- Near as I can tell, if you paid your taxes and didn't sacrifice people you were acceptable. Buck the order of things and the legions could put a world of hurt on you and your people. Pretty much a good thing as far as I'm concerned.
Armed forces - Tough, but at times too doctrinarian or poorly lead. The legions greatest contributions came not from their swords but from their spades. Roman roads built with legionnaire backs made and broke the empire