I held off on answering any personnel questions in last week’s mailbag because I first wanted to get a peek at the team on the practice field. Now that I saw last Thursday’s OTA practice, I have a better handle on how this coaching staff views the roster.Last week’s mailbag tackled questions related to the coaching staff, front office and ownership. Within hours of fielding multiple queries about general manager Joe Schoen’s future, it was announced that he had received a multi-year extension. We’ll see if today’s questions prompt any similar developments!(Editor’s note: Questions have been edited for clarity.)I think it has gotten somewhat lost in the shuffle that the Giants’ hopes and aspirations for their future reside in the development of Jaxson Dart. He showed promise last season, but as with any rookie QB, there is room for improvement. What areas of his game do you think Dart should be looking to improve on the most from Year 1 to Year 2? — Richard D.For all of the attention paid to the changes this offseason, Dart’s development will be the biggest determinant of the team’s fate. His peaks were exceptionally high as a rookie, but some valleys can’t be ignored.Dart needs to play quarterback conventionally better and more consistently. The playground element of his game is awesome and will raise his ceiling, but it’s hard to live like that in the NFL. This is far from a perfect stat, but Pro Football Focus credited 39.1 percent of Dart’s pressures to the quarterback. The next highest rate was Lamar Jackson at 27.3 percent. If Dart can get into that range with Jackson and other scrambling quarterbacks, he should be fine. That will mean recognizing that there isn’t a big play available on every snap, and that sometimes a 2-yard completion on first down is acceptable.Dart didn’t always seem to read coverages cleanly, which led to some of his crazy scrambles. Those were great when they worked, but many of the best quarterbacks are ruthlessly boring because they always know where they’re going with the ball and therefore don’t need to walk a high-wire for four quarters every Sunday.Dart’s stats last year on long passes were awful. Was this a flaw in his game or a lack of receivers who could get separation deep? Will the deep ball be a major part of the offense this year? — AnonymousDeep throws were a question on Dart’s pre-draft scouting report, so it can’t be chalked up to his supporting cast exclusively. Still, it didn’t help to have a collection of receivers lacking explosiveness after Malik Nabers tore his ACL during the first half of Dart’s first start. Dart’s footwork and mechanics got sloppy at times last season, which seemed to contribute to inconsistency with his deep passes. Dart completed 32 percent of his passes that traveled at least 20 yards in the air, which ranked 32nd among quarterbacks with at least 199 attempts.It’s too early to say if deep passes will be a “major” part of the offense this season. This is lining up to be a smash-mouth offense that relies on the quarterback getting the ball out quickly, but every offense needs a deep-passing element. Ravens quarterback Lamar Jackson regularly ranked in the top-10 in attempts 20-plus yards downfield under John Harbaugh. With the Giants hoping Nabers is healthy and the additions of free agent Darnell Mooney and third-round pick Malachi Fields, the pieces should be in place for an improvement on deep passes from Dart in Year 2.Who will be the main voice in Dart’s development? — Stephen L.There was no ambiguity when Brian Daboll was running the show. Daboll seemed more like a quarterback coach than a head coach at times. Harbaugh will oversee everything, but he doesn’t have a background as a quarterback — or even an offensive — guru. Dart will spend most of his time with quarterbacks coach Brian Callahan, who has worked in that role previously with Matthew Stafford, Derek Carr and Joe Burrow. The main voice in Dart’s development will be offensive coordinator Matt Nagy. Nagy will literally be the voice calling the plays to Dart during games, and the OC will be in charge of devising the game plan.I sense that Malik Nabers’ post-surgical problems are worse than the Giants are letting on. Some detailed reporting would be helpful. — Brian G.It’s hard to provide concrete details this far out from the season. I broke the news two weeks ago of the second surgery to remove scar tissue, but the team isn’t providing public updates on Nabers’ condition other than answers in news conferences. There’s no evidence in that setting of deep problems, but it has obviously been a challenging rehab from a significant injury.Harbaugh’s response on Nabers’ status last week was discouraging, but there’s still plenty of time for the third-year receiver to hit his Week 1 target. Barring any other setbacks, there won’t be much to report on Nabers until closer to training camp since he’s still in the middle of what Harbaugh called the “slog” of his rehab.Do you have any concerns with both Nabers and Cam Skattebo coming off of big injuries? — Kenneth C.Of course. It certainly would be better if two of their top offensive players were not coming off major injuries. If I had to set an over/under on Nabers being ready for Week 1, I’d take the over. You’ll notice I separated that from my previous answer because this is just my hunch based on how his rehab has progressed and not based on reporting. The bigger question isn’t the exact week Nabers returns; it’s how long until he returns to being unstoppable like he has been at times during his young career.The word has always been that Skattebo faced an “easier” rehab than Nabers (that’s easy for me to say when it wasn’t my foot pointing in the wrong direction last October). The dislocation was immediately reset, and the broken fibula healed long ago. The torn ligament in his ankle likely took the longest to heal. It would be a surprise if Skattebo isn’t ready for Week 1, but like with Nabers, the question is if the running back will be as explosive when he returns. Skattebo wasn’t the fastest running back before the injury, so he can’t afford to lose a half step.