If I had a vote in the Mets front office, I'd be pushing to acquire Adam Dunn.
Sure, he's not a great fielder, but either is Fernando Tatis. Sure, he strikes out a lot, but his OPS is in the top ten in the NL. He's also tied for the league lead with 30 home runs.
A few of them might be attributed to his home park, which is one of the best hitters parks in MLB, but Dunn's homers don't barely clear the wall. He has raw power, and the home runs he hits carry well into the stands, no doubters away from home as well.
Go for Dunn, Omar Minaya, if you're still looking for a bat to fill in left field.