I hope so. I love the idea of Brazilian nomads in the interior, menacing the eastern cities.Personally, I'm still unsure what should happen to the Amazon and Guyana and South America in general. On the one hand, rainforests in the old world did have states. Indonesia, Indochina and India all had powerful states. On the other hand, the central amazon seems pretty hostile to civilization.
So writing this out, I'd say that the southern amazon (where evidence of human civilization exists) would be able to host jungle states, who grow rice would be possible similar to the jungle civilizations of Thailand and Cambodia. Pretty much only the Central Amazon, Atacama, and Guyanan Highlands would lack civilization. The coasts of Guyana might have some sort of civilization. Also unsure what happens to the Brazillian interior, are there going to be Guanchos/Cowboys roaming the tropical plains?