The NCAA is setting the stage for a dramatic restructuring of college sports that will give each of its three divisions the power to govern itself. Approval of a new, streamlined constitution is expected in January with minimal consternation or conflict. The next phase of the NCAA’s transformation figures to be more difficult: A reshaping of Division I that will tackle revenue distribution, how rules are made and enforced, access to the most-high profile and lucrative NCAA events—such as the men’s basketball tournament—and just how big the tent should be at the top of college sports. “So those are the things that we’re really going to have to get to the granular spot, and some of those are going to be very difficult conversations to have,” said West Virginia athletic director Shane Lyons, who is the chairman of the Division I Council and a member of the committee that trimmed the …