First it would be nice to be able to see w/l ratio for both. Maybe overall and broken down into weeks or months so you could see just how well your new defense is doing. You already do that to some extent by looking at your defends, so no biggie if u can't break it down by an interval.
Second, it would be nice to be able to replay attacks. This would help in learning attack strategy. Seeing what went bad and what went well.
