For a time, Las Vegas was the most popular idea for a proposed resumption of the NBA season: a bubble city of teams grinding out the playoffs within a quarantine of connected casino hotels and arenas. As time has passed, those talking with NBA commissioner Adam Silver find him still needing to be convinced Vegas is the best idea. For some of the league’s most influential veteran star players, that’s a reassuring notion because they’re concerned about some younger teammates struggling with the patience required to properly fortify a bubble environment in Vegas.