I'm definitely worried about the roster situation. Johan Santana plays for the Mets now in what has been the biggest off-season trade by far. I'm pretty sure the XBox 360 version has him on the Mets, but he is still pitching for the Twins in these Wii videos. Hopefully the producers didn't just half-ass this version.
MLB The Show for PS2 is looking pretty good on the other hand. It received an 8 from IGN, so it's an option if this one doesn't turn out ok.