Custom Playbooks was one of my favorite features to design simply because of how it came together. We wanted to give players the ability to trim down the massive playbooks but also organize them as they desired. The first step was implementing tech similar to what was already done on Head Coach, but we wanted to take it a step further and create a simple UI that would allow for re-organization of plays.
One of the UX designers drew inspiration from their iPhone and put together some basic mocks that would be amazingly close to the finished product. We created paper mocks to quickly verify the functionality met our objectives.