The New York Mets are the league’s biggest disappointment. They entered the season with an 86.6 percent chance, per FanGraphs, of making the playoffs. At the All-Star break, those odds are down to 0.8 percent.With just under three weeks left before the Aug. 3 trade deadline, the Mets profile as a classic seller in a market lacking them. Below, beat writers Tim Britton and Will Sammon answer questions about Mets president of baseball operations David Stearns’ history as a seller and what to expect at the deadline.How big a deal is it really that David Stearns does not have a GM working under him? — George G.Britton: Not much. The position of president of baseball operations is a classic example of title inflation. It exists so certain teams can hire away another team’s general manager without its being viewed as a lateral promotion. The remit of a present-day president of baseball operations is the same as it was for a general manager 15 years ago before the title started proliferating. In that vein, a GM under Stearns would be doing the same stuff as an assistant GM in the past. Eduardo Brizuela is Stearns’ top assistant right now, serving in that capacity.It would make sense for Stearns and the Mets to hire a GM if: