If legislation makes people moral, we should wish for more legislation.

Have you ever come across Helvetius? From what I understand (and I'm by no means an authority here), his basic political philosophy was that law can make people moral fundamentally, and not just make them act moral. It's an interesting philosophy, and his writings were very influential on Marx. Of course, we saw empirically in the 20th c. how misguided Marx's interpretation of Helvetius turned out to be.

Can good laws fundamentally change our moral makeup? Certainly some religious people listen to their spiritual 'laws' and act (and feel) in ways that they see conforming to the rules. (For example, some religions mandate that their members tithe, and many of these members are happy to do it, because they see it as a moral imperative.) Could the government, if benevolent in its will, have a similar effect? My gut says likely not, because we don't view the government as an eternal force like a religious person might their authority, but rather we see the government as a useful institution that only is there to serve our interests (and rightly so). Perhaps that is why communist regimes always need a personality cult, to convince the people that they serve the government on not the other way around.