I saw two stadiums in person the last few days which not only further proves my point about stadium design, but it also proves my point about earning fans.
Below are pictures of Utah Valley University's (don't worry, me neither) baseball stadium. They are a D1 school. First, notice the design which is just like how I have argued stadiums should be built . . . which is just like how almost every other legitimate program builds their stadium:
They don't build down the line until it is absolutely needed due to not having enough seats. Instead, they build up the stadium part making it look bigger/nice instead of having just 6-10 rows from the dugout to dugout area. They also build with down so there is a berm which is very popular among college students and families.
Now, check out their crowds. Sure, the seats have a solid crowd, but look at how packed the berm and outfield areas are. Why? Because people enjoy being able to spread out, be more relaxed, and have room for college students to be loud and talk shit to opponents and children to have more space to play.
The seats are important, because that is where you will have your loyal fans - the people who show up no matter what, even during bad seasons, and buy season tickets. However, that number will always be limited if you don't have the means to hook people into loving the product. And the way to hook people into loving the product is to give them more entertainment/fun/enjoyment than just the game, which is what the berm allows. Eventually, those people end up becoming more of the loyal fans and also show up during bad seasons after it is engrained in them:
Below is BYU's stadium. Once again, you can see that they first built up the main portion of the stadium giving it a bigger, better, and more prestigious look. They have a two level stadium. They haven't build down the lines and use those areas for batting cages, etc. They realize that the bigger stadium looks better, people prefer to sit closer to the main action (dugout to dugout), and it is a recruiting tool.