Excellent addition to the 7th Sea setting. 2nd Edition's reimaging of Numa as a full nation in its own right adds swashbuckling fantasy "not-Greece" to the makeup of Theah. The Atabean Trading Company are exactly the villains a heroic pirate campaign needs! The new nations of the Atabean Sea ("not-Carribbean") give a taste of the bredth of Terra on the horizon, from the native Rahuri, to the revolutionary nation of former slaves of Jaragua, and the Pirate Republic of Aragosta.
La Bucca (a former Theahn Prison colony that's now a privateer free market state near Theah itself, at least relative to the Atabean Sea and the pirates of Aragosta) speaks to me less strongly than the others, but I realize that's probably personal taste rather than any lack of quality on the part of La Bucca.