what were pros of french rule in haiti?

Answer 1

One of the Pros would be the Declaration of the Rights of Man.

By the 1780s, Saint-Domingue produced about 40 percent of all the sugar and 60 percent of all the coffee consumed in Europe. This single colony, roughly the size of Maryland or Belgium, produced more sugar and coffee than all of Britain's West Indian colonies combined.

During this period, an estimated 790,000 African slaves were brought to work on sugarcane and coffee plantations (accounting in 1783-1791 for a third of the entire Atlantic slave trade), though inability to maintain slave numbers without constant resupply from Africa meant that at its end the population numbered only about 500,000, ruled by some 32,000 Whites.

African culture thus remained strong among slaves to the end of French rule, in particular the folk-religion of Vodou, which commingled Catholic liturgy and ritual with the beliefs and practices of Guinea, Congo and Dahomey.

To regularize slavery, in 1681 Louis XVI enacted the code noir, which accorded certain human rights to slaves and responsibilities to the master, who was obliged to feed, clothe and provide for the general well-being of their slaves.

While the French settlers debated how new revolutionary laws would apply to Saint-Domingue, outright civil war broke out in 1790 when the free men of color claimed they too were French citizens under the terms of the Declaration of the Rights of Man. In March 1790 the National Assembly granted full civic rights to the gens de couleur.

Answer 2

With encouragement of Louis XIV, they had begun to grow tobacco, indigo, cotton and cacao on the fertile northern plain.
In 1767, it exported 72 million pounds of raw sugar and 51 million pounds of refined sugar, one million pounds of indigo, and two million pounds of cotton.Saint-Domingue became known as the "Pearl of the Antilles" — one of the richest colonies in the 18th century French empire

The Haitians are now often tri-lingual:
French/Creole/English

From Haiti, the French used it as a base to develepe New Orleans.

Because of the PAST , France continue to give lots of AID to Haiti.
Even now many Haitian Artists reply on France for grants to pay for exhibitions overseas.