As a classic seller, the New York Mets were one of the busiest teams at Monday’s trade deadline. Here are five lingering day-after thoughts. All information is based on conversations with league sources who spoke on the condition of anonymity because they were not authorized to speak freely on the topics.1. Luis Robert Jr.’s murky futureWhile center fielder Luis Robert Jr. created some conversations in the trade market, the money the Mets would’ve had to pay down didn’t make sense for the value of the prospects teams would have offered in return. So, essentially, there was no significant interest. Robert is owed $5.9 million for the rest of this season plus $2 million for a buyout on a team option for next year worth $20 million.Perhaps if Juan Soto hadn’t sustained a calf injury that sidelined him a handful of weeks, Robert’s lack of playing would’ve changed the Mets’ calculus. With Soto out, the Mets can still play A.J. Ewing, Carson Benge and Robert in the outfield.When Robert stays healthy, he sometimes demonstrates tantalizing potential. He was an All-Star in 2023, hitting 38 home runs and stealing 20 bases. The problem is Robert’s diminished availability and production since then because of injuries. Robert, who didn’t want to be traded from the Mets, owns a .610 OPS through just 138 plate appearances this season.Last November, a couple of months before flipping him to the Mets, the Chicago White Sox exercised their $20 million option on Robert’s contract despite a .661 OPS and injuries limiting him to 431 plate appearances.2. Mets highly value their catchersMultiple teams said the Mets asked for a club’s top prospect plus more when they reached out about catcher Francisco Alvarez’s availability in a trade.