Despite the rapacity of the initial invasions, French domination brought certain beneficial reforms to the puppet states created by France, all of them products of the French Revolution’s innovations a decade earlier: single customs areas, unified systems of weights and measures, written constitutions, equality before the law, the abolition of archaic noble privileges, secularization of church property, the abolition of serfdom, and religious toleration. At least for the early years of the Napoleonic empire, many conquered peoples - most obviously commoners - experienced French conquest as (at least in part) a liberation.
Napoleon was not just a brilliant general, he was also a serious politician with a keen mind for how the government had to be reformed for greater efficiency. He addressed the chronic problem of inflation by improving tax collection and public auditing, creating the Bank of France in 1800, and substituting silver and gold for the almost worthless paper notes. He introduced a new Civil Code of 1804 (as usual, named after himself as the Code Napoleon), which preserved the legal egalitarian principles of 1789.
In education, his most noteworthy invention was the lycée, a secondary school for the training of an elite of leaders and administrators, with a secular curriculum and scholarships for the sons of officers and civil servants and the most gifted pupils of ordinary secondary schools. A Concordat (agreement) with the Pope in 1801 restored the position of the Catholic Church in France, though it did not return Church property, nor did it abandon the principle of toleration for religious minorities. The key revolutionary principle that Napoleon imposed was efficiency - he wanted a well-managed, efficient empire because he recognized that efficiency translated to power. Even his own support for religious freedom was born out of that impulse: he did not care what religion his subjects professed so long as they worked diligently for the good of the state.
Napoleon was no freedom-lover, however. He imposed strict censorship of the press and had little time for democracy. He also took after the leading politicians in the Revolutionary period by explicitly excluding women from the political community - his 1804 law code made women the legal subjects of their fathers and then their husbands, stating that a husband owed his wife protection and a wife owed her husband obedience. In other words, under the Code Napoleon, women had the same legal status as children. From all of his subjects, men and women alike, Napoleon expected the same thing demanded of women in family life: obedience.