He's exactly the person he's always been. In some ways that's a good thing: who doesn't want a guy who does exactly in the pros what he did in the minors?
But I don't believe in Marte's power, and I don't think he'll ever take walks. Everything he does is utterly dependent on batting average, and that makes me nervous in people who are not Ichiro. He LOOKS like a ball-player He moves like one whether sauntering to the plate or running in that aggressive crouch around the bases. But he makes dumb errors because he's not always focused and if the singles aren't falling his defense is not likely to be his calling card.
He gives me that Yuniesky Betancourt / Omar Infante vibe, I guess, where you want them to be better than they actually are. Hopefully he's on the Infante side of that scale. If he's really a .300+ hitter in his prime, that'll be fine. I'm hoping for that.