I don't understand how a conference can function for fans beyond 16 teams.
With 16, you've got 2 divisions with your team playing the 7 in your division and then alternating 2 cross-division games every year. So you'd be playing each cross-div team at least once every 4 years.
As a fan, I wouldn't be happy playing cross-divisional teams every 5 or 6 or 7 years (depending on how many teams you had - 18, 20, 24 or 30).
I don't understand how 24 or 30 teams would viably work for fans, in terms of the frequency of play between schools.
With 16, you've got 2 divisions with your team playing the 7 in your division and then alternating 2 cross-division games every year. So you'd be playing each cross-div team at least once every 4 years.
As a fan, I wouldn't be happy playing cross-divisional teams every 5 or 6 or 7 years (depending on how many teams you had - 18, 20, 24 or 30).
I don't understand how 24 or 30 teams would viably work for fans, in terms of the frequency of play between schools.