Regular visitors of Notinhalloffame.com know that we are slowly working on the top 50 of every major team in the NHL, NBA, NFL, and MLB. Once that is done, we will examine how each team honors its past players, coaches, and executives. As such, it is important to us that the New York Mets have announced that they will be retiring the number 15 of Carlos Beltran this season. The news follows Beltran’s election into the Baseball Hall of Fame this year, and his plaque will have a Mets cap on it. No date has been announced for the ceremony.…