When I, and I assume most people, talk about a Dutch Brasil, it would only the area around Recife, not all of Brasil. Roughly this size:How do you think Dutch Brazil would evolve? Would it be as populous as OTL Brazil? And how would the Netherlands evolve with such a large colony?
http://commons.wikimedia.org/wiki/File:Nederlands-Brazillië.jpg
Not all of Brasil.
How would it look? Well, look at Surinam. It would be mainly a planting colony, with maybe some minor settlers colonies.