I would like to see more options in Latin America. Currently, no airlines from the two largest countries (Mexico, Brazil) are members. Flights within the region are limited to LAN which has 1 daily flight each into and out of Mexico and Brazil and a handful of BA flights (GRU-EZE). Flight options from Brazil to Europe are very limited (BA 2x the price of other options, IB especially difficult to deal with if tix purchased in Brazil) and also limited within Europe (connecting flights from Madrid...).

I'm hoping they will sort out the LAN - TAM merger and Mexicana will return, but for now, Latin America is not very well served by any alliances, with OW especially weak.