Through the first-round dip and second-night standstill, Bill Belichick’s actions in the draft have shown that he is comfortable with the top of the Patriots’ depth chart. The Patriots filled their immediate need at wide receiver with a pair of prospects who are believed to need time to develop. They also added some defensive pieces who should make an impact, even if they’re going to start as complementary players who will earn time through their performance in sub packages. The majority of the Pats’ resources over the last two months were spent on retaining some of their key free agents, including tackle Sebastian Vollmer, cornerbacks Aqib Talib and Kyle Arrington, and wide receiver Julian Edelman. They’ve also added receiver Danny Amendola, safety Adrian Wilson and defensive tackle Tommy Kelly. Obviously, the most immediate need was at wide receiver, where they’ve replaced Wes Welker and Brandon Lloyd with Amendola and Donald Jones. While assessing the draft class, Tennessee’s Cordarrelle Patterson was widely considered the best outside threat, but the Pats passed him over in the first round, giving him to the Vikings to accumulate four picks that helped fill broader needs. “We’ll see how it all comes together,” Belichick said. “I felt like we got good value for our picks, good players, guys that have a lot of things going for them, so we’ll see how it all works out.” The Patriots later selected Marshall’s Aaron Dobson at No. 59. Dobson, a 6-foot-2, 210-pounder, is physically gifted enough to be a prototypical outside-the-numbers player, but there will be the challenge of learning the Patriots’ sophisticated offense, which no drafted receiver has done in more than a decade.