Opposition to Sweden is because they're apart of Europe, not because they're European? Otherwise I don't really understand support for Brazil over Sweden.
It should be more important that they bring something unique to the game. It remains to be seen whether they will, of course. Hopefully a unique Cannon, tundra bonuses, or a diplomatic UA. It seems a little dramatic to damn the expansion just because there are "too many" European civs. All it really affects is a game map of the earth, and in that scenario, if there weren't more Europeans, how would you go about reenacting colonization? Whether a civ is Asian, African or European doesn't make it inherently better for the game.