That's potentially 4 extra games for a non bye champion. We're getting into NFL levels of games at that point and a really elongated season, into February I would assume, right? The other option would be to start the rounds right after the conference title game, but what happens if the team had their bye week on week 3? That means they could be playing 15 weeks straight. Even the NFL doesn't do that. In theory I get the desire for an expanded field but a consideration for player safety this is not.