[mrcn]

As a UX designer and project manager, I've spear headed several projects like this.

First thought... just about every consideration, question, risk, etc, can be valuable and belongs to a specific domain or stage. I've benefited from creating these category/stage buckets and adding to then progressively. Things will get overlooked, this helps increase observable surface area.

Sophia Voychehovski's OOUX was helpful early on in expanding my mapping toolset.

I'm going to check out Getting Real right now.