Changes at the board level have the potential for real change. A few months ago in a newspaper article Anselmi admitted he needed board approval to fire the coach - that's probably why it happened at such a bad time (after a couple of good games), because they were waiting for the scheduled meeting.
But there's nothing to say that new board members will also need to be the final approval on coaching changes (which was probably really a money issue asthey have to pay out Winter's salary and Mariner likely gets a raise with the new job).
Bell have made huge changes with the way CTV is run, maybe they'll make big changes with MLSE as well.