This is about the only change they could make that would be even worse than it is now. The only good thing is that it's logistically impossible, so it will never happen. A sure way to drive away the casual college hockey fan is to make them buy tickets for 3 days of 2 games each when they are only interested in going to 1 or (hopefully) 2 of the 6 games. Making them commit to 2-3 nights in a hotel, plus time off work, for a possibility of only 1 game is asking them to watch the games on TV instead of going to the games.
8 regionals of 2 teams each will fill the arenas, give the players of both teams the playoff atmosphere that they deserve, and keep travel expenses down by having a minimum of 8 teams, and more likely 12 or so teams, playing within driving distance of the games.