Fifteen allows double byes for the top 4 teams like they do now. The ACC does it now with teams 10-15 playing on the first day and then it works like the current B1G bracket does for the last 4 days.
It becomes really complicated to give double byes with 16+ teams. You can give the top two double byes, but you also end up with 6 games on day two & finding TV time for that many games would be difficult. With each game taking about 2 hours and then 30 minutes between games for the teams in the next game to warm up you are looking at 15 1/2 hours (at least).
I guess I still don't understand why the first day isn't 9/16, 10/15, 11/14, 12/23 with the 9/16 winner playing the 8 the second day.
Four games each of the first three days. They say it gives the 9 seed a bye but why is that so important?