For starters, fielding is VASTLY changed. I noticed the very first game I played and every game since. If you don't notice it, then I don't know what to say. Balls down the lines no longer are sure bets to get by corner infielders, outfielders have much improved fielding animations that give them more options to field balls, etc.
I spoke about this last year and basically it fell on deaf ears...where were you? And it's still my pet peeve...AI outfielders always take perfect routes to balls, especially balls that deflect off the outfield walls. They *always* play the deflection perfectly. The only times OF'ers make mistakes are in misjudging line drives they think they can catch, and then trying to make diving grabs that you already know they are going to miss.
I've got my own ideas on how it can/could be fixed, but until SCEA and others realize there is a problem here, I'll keep to myself I guess......