Really, in the history of this team, has any in-season bullpen acquisition come in and made the difference? I can't think of too many for any team, really. The closest I can think of is Guillermo Mota, who came in and picked up where Duaner Sanchez left off in 2006, but (a) the Mets got him for nothing, ( we were heading to the playoffs with or without him, © he ended up sucking it up in the post-season, (d) he was a-cheating, and (e) the Mets should have shunned him and instead paid him good money to take them for a ride and get suspended. Meanwhile, we've given up valuable players like Jason Isringhausen and Jason Bay. Half of Xavier Nady too. We lost this, in the end, on a few stupid grounders that split the infield. The answer isn't to trade for a more perfect bullpen. The answer is to build more margin for error.