Charlie Collier is expanding his domain at AMC Networks. The AMC President & General Manager has been named President & General Manager of SundanceTV. He will serve in a dual role overseeing both networks, and will continue to report to Ed Carroll, Chief Operating Officer of AMC Networks. Collier’s senior executive team at AMC also is expected to work across both networks, reporting to him. "Running AMC and Sundance under common management makes good sense for both…