As above ryder cup mode would be awesome - needing to finish in the money list as well, not playable from the start.
Also the made up characters could be shot of and get more pros into the game.
Weather conditions (again as above) play a great part in the game. Many times I've been teeing off in rain that is coming down sideways. When you play golf your playing against the course and the elements - this needs to be involved in the game.
I'd like to see daily/weekly online tourneys for the wii - maybe even a world wide/continent or own country league. After all the online facilities aim is to get us playing together.
One last thing - take away the option to play as a pro from the game with full stats when playing online - people should be using their own characters that they use in their career mode.
P.S
Natalie Gulbis's curves could do with an over haul as well as I'm sure many will agree she has a lot more on offer than the game provides.