It will be interesting to see how the new ball physics affect the game. I think something along the lines that Andrew mentioned would enhance the realism of the game, provided they're properly scaled. I'm also curious to see the new chip, pitch, and flop shot physics at play, as there's room for improvement there as well. I still think the ball/cup interaction physics need some work though; I make way too many putts that shouldn't drop because they seem to get "hoovered in" by the hole.
I see the improved AI of the computer golfers getting more attention with this latest update. There must be a much stronger desire for AI golfers than I'm able to gauge. I'm just wondering, how many of you would play anything more than a casual curiosity round or two with an AI player? I guess I just haven't found the allure to playing with them yet on an ongoing basis. That's not to say it couldn't possibly happen eventually.
I know I was never a fan of competing against AI drivers in racing games until Turn 10 Motorsports came up with the concept of "Drivatars" in Forza 5, and now Forza 6. These Drivatars are statistically based on the driving habits of other human drivers in the game, many of whom are on your friend's list. They exhibit behaviors that are much more human-like than anything else I've seen. If Perfect Parallel can come up with the cybergolf equivalent of Forza's Drivatars, they'll be onto something big!