I'd honestly just recommend sticking with default heisman, until you get the hang of it, since most slider sets here are geared towards actually adding realism, and more times than not what is considered to be a more realistic challenge. For most of us, finding some way to up the ante, as far as difficulty, from default heisman is top priority. Like you, the vast majority of us find AA far too easy/simple, as well. I'm just guessing, but I assume you haven't played this very long. In no time, you'll find default heisman way too easy as well.
That said, there might be an AA set that you would like:
https://forums.operationsports.com/f...n-sliders.html
https://forums.operationsports.com/f...ncaa-14-a.html
https://forums.operationsports.com/f...ncaa-14-a.html