It would be nice if they beefed up some of the pavillions they already have. Italy is a snooze as is Germany.
I would love to see a Soarin' over Italy ride. I would be awesome and help siphon the hoards away from FW's Soarin'.
But to the original question, I agree with those who have posted about Australia (Opera House, Uluru, naturalist's museum), Egypt (Pyramids, Sphinz, antiquities museum), and India (Taj Mahal, the Pink city of Jaiphur, the Golden temple of Amritsar)
heck, they could do a Soarin' for Australia and India too while they were at it.