This may seem like a relatively small change, but I think it makes a big difference visually. In Chapel Hill, the University of North Carolina's Dean Smith Center (or "Dean Dome") has consistently featured a filled-in light-blue outline of the state and the school's NC-overlay logo. Prior to the current season, the NC was surrounded by a traditional center-court jump-ball circle, also filled in with light-blue (top of following display). This season, however, the NC falls directly on the shape of the state, without the larger light-blue center-circle (bottom of display).
I like the old (top) design as it makes the NC look more, pardon the pun, "centered." (The top image comes from this YouTube video, whereas the bottom one is from the ESPN3.com archived video of this year's Wake Forest-UNC men's game.)
UPDATE: The fully filled-in, light-blue jump-ball circle is back for the 2011-12 season.