Is that it? After all the talk of the payroll flexibility the Mets would have heading into 2014, the additions of Curtis Granderson, Chris Young and Bartolo Colon represented a small step for the organization but hardly the kind of splash needed to enter the playoff conversation. What the Mets didn’t do — mainly, upgrade at shortstop and first base — loomed larger during the offseason than the $87.25 million they committed to Granderson, Young and Colon. It leaves the Mets in the familiar position of needing to catch every break if they are to end a playoff drought that dates to 2006. Among NL clubs, only the Marlins have a longer drought. A healthy Matt Harvey certainly would give the Mets a better chance, but even if the stud right-hander returns early from Tommy John surgery — say August, as he says is possible — is that enough time to save what has the look of a sixth straight losing season in Flushing? Ruben Tejada has become the starting shortstop by default, after the club missed on free agent Jhonny Peralta and decided Stephen Drew was over-priced by agent Scott Boras. And first base remains as muddled as ever. First, general manager Sandy Alderson overvalued Ike Davis and decided to keep him after not receiving the top pitching prospect he had sought from teams such as the Brewers, Orioles and Rays.