Interesting and important observations by a fellow neo-Calvinist, Gideon Strauss:

Yes, there are some not-so-good-things about neocalvinism. We neocalvinists are not often tempted to world-flight, but we are tempted to the triumphalistic notion that the sanctification of the world rests finally in our human hands, we are not often tempted to anti-intellectualism, but instead often succumb to intellectualism, we are not often tempted to an illiterate biblicism, but instead sometimes succumb to a sophisticated and subtle reduction of trust in the authority of the Bible, we seldom go too far toward quietism, but often forget to pray. At least, some of us do.