if div winners get byes you are suggesting 12 teams get in the playoffs. 5-12, 6-11, 7-10, 8-9 play in first round.
you could do a
5-8 and 6-7
winners play 3 and 4
winners play 1 and 2
if you go to 4 divisions…top 3 get byes, 4 v 5 cross over div play then you have quarter finals. In current div format this is 4 div winners and top 2 WCs get byes then 7-10, 8-9 are the wild cards.
top 3 in conf gets byes then 4-13 do a wildcard leading to quarterfinals