The Warriors strolled into summer with a plan that required flexibility. They would find a way to resolve the Jonathan Kuminga matter and then fill their roster around the nine players already under contract.They recognized their needs, identified players to fill them, entered negotiations with those players and . . . waited.And waited.And waited.The wait ended Tuesday, the eighth day of autumn and one day into NBA training camp. Incumbents Gary Payton II and Kuminga are back. The new last-minute roster additions are as expected: Seth Curry, Al Horford and De’Anthony Melton.Golden State’s front office it believes it has a squad capable of contending in the unyielding Western Conference. Moreover, one that can ride its talent and big-game experience to a deep NBA playoff run. Decorated veterans Stephen Curry, Jimmy Butler III and Draymond Green were and are on board with the plan.We know what Payton brings. We know what Kuminga can bring, and what he wants to bring. But it’s the three new acquisitions that, aside from the vagaries of health, could determine the success of the team. All three should be beneficial, though they come with pros and cons.Seth CurryPROS:...