One solution might be to not have the team that secured promotion play the playoffs and give that spot to another team, but that would be difficult to implement.For an hypothetical financial gain once upon a time, I wouldn't want to not have a chance at a title, be it of a lower division.Also, those auto-promotion spots can benefit to other teams if the ones above them do win their division.I think we are making too much out of it.
One solution might be to not have the team that secured promotion play the playoffs and give that spot to another team, but that would be difficult to implement.