Even the biggest McGloin optimist (ahem) knows that the Raiders will have to play complementary football at a higher level than it was with Carr. The defense will need to go from "improved" to "weaponized." The running game will take a greater share of the load. Michael Crabtree needs to cut out those drive-killing drops. McGloin is not a "play it safe" type of backup. He will get his money's worth with aggressive throws, like he did on two third-and-long conversions late against the Colts. That approach can work when surrounded by immense talent.