Top two getting a double bye? Doubt that ever happens.
Realistically I don't think there is much that can be done to help the regionals other than going back to two sites instead of four. Even then attendance is down in the regular season across the board. Even with poor attendance they must be calculating that four sites is still making more money than two would. Not sure. But unless you go back to 12 teams, it doesn't seem like a regional site hosting 8 teams is feasible.