I remember someone telling me that auto promotion is not as good as winning the championship because you do not get the boost in season ticket holders, and not as good of fan survey. My first season in D2, after winning D3 championship, I was able to have higher ticket prices and bring in much more revenue then I am now, basically off the strength of the fan survey.
After that its the same stuff, you want good attendance you have to win road games, TV, and rivalry, which is really frustrating because its really hard to win road games when you are a good but not great D2 team. Most of the time you need to make sure you win your home games and build enthusiasm, so on the road you need to TIE vs the home team going Normal...which has happened to me 3 times this season, all 3 losses, and after those 3 games I got poor attendance at the following home game. HCA+effort differential is basically a 20 point advantage IMO, and that's tough to overcome.
Also this season we didn't get an NBBA team demoting into our league like we usually do, so the league is not as strong as it has been in past seasons, which may affect the merchandising.