Financially, i've always aimed in lower division at filling my theater where in D2 you have to start to be aggressive when setting the price of your LT, if they cannot pay they will go for Bleachers. You can make more money with less people. It is counter-intuitive.
If you want to promote in a competitive division starting in D2, rebound is paramount for your center. Cost effectiveness is fine, but the difference in rebound starts to hurt a lot.