A few ideas for the developers to consider:
Exploration
Pedro Menéndez de Avilés
Spanish Admiral and Explorer, commander of the Spanish Treasure Fleet based in the Caribbean, founder of St. Augustine.
Provides 2 or 3 galleons, (switch Da Verrazano back to caravels?) or +1 movement for galleon?
Francisco de Orellana
Spanish explorer, discovered Brazil, led famous expedition all the way up the Amazon river, founded Guayaquil.
+1 Line of site/movement for caravel?
Military
Pedro de Valdivia
Spanish explorer and conquistador, explored and conquered Chile, founded Santiago de Chile, notorious for miraculous defenses against relentless attacks by Chilean natives.
Free Garrison promotion for veteran soldiers? +1 strength for all units when defending?
Piet Hein
Dutch Admiral, first vice-admiral of the Dutch West India Company, leader of many successful raids on Portuguese Brazil, famous for victory over a huge Spanish treasure fleet at Battle of Matanzas, off the coast of Cuba, considered one of the first privateers before the concept was created.
Makes Frigates (or merchantmen) capture cargo like privateers or
+1 strength/ +1 movement for merchantmen
Religion
Miguel Hidalgo
Mexican priest that declared independence from Spain, incited the Mexican Revolution.
Get Lord Baltimore's effect, + Liberty Bells for Churches and Cathedrals
Lord Baltimore gets + Crosses for political buildings.
Tomé de Sousa
Portuguese soldier/governor of Brazil, tasked with re-establishing order in the colony at a time when it was largely neglected by the Portuguese government which was focused on the East Indies, known for bringing the first Jesuits to Brazil.
Provides 2 Jesuits and 2 Veteran Soldiers
Economy
Jean Talon
French administrator of Quebec, known for 'rescue' of New France when it was weakened by mercantilist policies, Indian wars, and declining population. When appointed as intendant of New France, he brought with him to the colony a large number of settlers, as intendant, he reduced reliance on the fur trade, introducing large scale agriculture and shipbuilding.
Provides 2 expert farmers and 4 free colonists
Samuel Blommaert
Dutch merchant/naval officer, first director of the Dutch West India Company, led the Dutch colonization of Zwaanendael, modern day Delaware.
Provides 2 or 3 merchantmen?
Tiradentes
Worked for Portuguese government overseeing precious metal/stone production in Minas Gerais in Brazil. Saw abuses by the government, became leader of Brazilian revolutionary movement, known as one of the fathers of Brazil.
Increases gold, silver, gems, production by the tax rate?