Hitting: I think swing stick, as currently constituted is beyond "off"...it's terrible. The timing (which is really all it focuses on anyway) is bad. The hit variety is still lacking. The sound of the ball hitting the bat...uggh.
Pitching: Same problems as hitting, in a way. Responsiveness is bad. Some motions are far too similar causing issues. Walks, wild pitches, "chin music," etc are all too infrequent. what do you ger instead? Meatballs. Every bad pitch is a meatball and nearly every meatball is a homerun (another area plagueing the 2K brand of baseball). Leave the meatballs were they belong...Italian restaurants
Fieldings: IMO, the strongest gameplay aspect of 2K baseball. I actually enjoyed fielding mostly (minus the framerate hiccups that nagged all aspects of their game). Tweak it and tune it. DO NOT do what you always do 2K and overhual it for the sake of it. This is part of the problem. For every positive you screw with it so much it becomes another negative.
controls: This is where it seems 90% of the resources go. Over the last few years we've had full blown interface changes each year. ENOUGH! Tune what you have, leave options in for what you used to, and move on.
Graphics: 2K7 models/looks with 2K8 animations (plus some tweaks) and your fine for now.
Presentation: commentary is bad as everyone knows. What's almost as bad is the way the lead ins and cutaways were so mistimed in 2K8. 2K's primary selling point in it's sports games has been presentation. This should be pretty easy for these guys, IMO.
What's so d*mn frustrating about 2K's game is there is something solid lurking under all their crap. There are times when I think I'm playing a good game only to look up and see David Ortiz in his nice maroon uniform, hitting balls that defy laws of physics.
what's worse for me? As a franchise player, I see all the potential in 2K. Some of the stat tracking for careers, records, and scouting are head and shoulders above The Show. Some of the franchise options are as well. You've actually got a pretty good front end that makes you want to get in there and mix it up. It's close in a lot of areas. There are just so many problems that the good gets overshadowed by a lot. Sigh...here's hoping for a good 2K9, so there's actually a reasonable choice this year.