For some reason I gravitate to graphs and visualizations. It's just the way my brain works. Here's an interesting way to look at team Expected Points Added (EPA). On the horizontal axis is offensive EPA and on the vertical axis is defensive EPA. Negative EPA is good on defense, so the best, most balanced teams would be in the lower right quadrant. The basket cases will be in the top left quadrant.
The teams are color coded by division. Hover over a team to highlight its division and see the numbers.
My thanks to Jack for turning me on to Tableau.