The only way I'd have any interest is if he came very cheap and just filled Wilson's role. Green absolutely needs a shot before Betemit. Why are they wasting their time on 3B? The only out-of-the-organization move they should be focused on is SS.
Would the Mets take a lesser prospect if the Brewers also included Hart? Does Hart even have much value to them going forward as an average corner OF who isn't cheap? I somehow doubt it.
He also breaks the first rule you're taught as a little league first baseman: he starts his stretch before the ball is thrown, so if it's a wide throw, he's hung out to dry and can't adjust to it.