In the NBA, they have shot charts for each game which show where each shot was attempted from and whether it was complete or not. Here's an example for a Cavs win over the Celtics.
In ultimate, when the statistical revolution gains steam, we should track how and where teams score with the disc and where they turn over the disc.
Where does the disc go dead/get dropped? Where is it thrown from? Are sideline hucks more risky? Is a team getting stuck on the sideline?
We could also log the time between throws and catches, to identify how quickly the disc is actually moving in an offence, and whether this correlated positively or negatively with scoring a goal, for a particular team.