I simulated out a season a couple years ago with 8 team conferences, that left nobody out.
After 7 games it went to a 128 team double elimination tournament, that again included everyone, and teams were slotted like FIFA tournaments, where teams were pre-slotted based on their finish within their conference, based on the difficulty of their conference.
It would never happen, but that's a great way to make every game "matter". Even if it's a Game 6 matchup with 5th place on the line, that might mean a home game. And the playoffs would be home games at least down to 16