7 of the 10 South American teams would mean Bolivia, Venezuela & whichever run of the mill team going through a tough period out of Paraguay, Peru and Ecuador will always miss out.
I was surprised to see that Peru were ranked 19th
For what its worth, this is how the World Cup would look under a 48 team system with the ratio i gave above (as per rankings, even though qualifiers don't always go that way)
Europe - Germany (3), Belgium (5), France (7), Portugal (8), Spain (10), Switzerland (11), Wales (12), England (13), Croatia (14), Poland (15), Italy (16), Iceland (21), Netherlands (22), Rep of Ireland (23), Turkey (24), Slovakia (25), Hungary (26), Bosnia (27)
Notable omissions - Ukraine, Austria, Sweeden, Greece, Serbia, Russia
Africa - Senegal (33), Ivory Coast (34), Egypt (35), Tunisia (36), Algeria (39), DC.Congo (49), Nigeria (50)
Notable omissions - Ghana, Cameroon, South Africa
Asia - Iran (29), South Korea (37), Australia (44), Japan (46), Saudi Arabia (48), Uzbekistan (61), U.A.E (64), China (81)
Notable omissions - Qatar, Iraq, Jordan
South America - Argentina (1), Brazil (2), Chille (4), Columbia (6), Uruguay (9), Peru (19), Ecuador (20)
Notable omissions - Paraguay
Central America - Costa Rica (17), Mexico (18), USA (28), Panama (58), Haiti (69), Honduras (75)
Notable omissions - Jamaica, Canada
Oceania - New Zealand (109)
Notable omissions - none
A lot of easybeats there