Yes you are right on Brazil being one of the biggest countries with a large cultural historyYou say that fairly definitively. It's the fifth largest country in the world both in geography and population. It has a rich history and strong culture. What scale are you using to determine "far better additions?"
but my question is how would they add to the World Showcase?
Many countries have many things culturally they can add but I think the World Showcase need more rides. I cant think of a good ride for Brazil unless it was a river ride(Amozon River), However I THINK DISNEY HAS A LOT OF river rides(Jungle Cruise, Splash Mnt.,
Kali RR, Malstrom, Mexico boat ride ect. LOve the idea of a new country hope they can come up with good attractions