This is a really helpful outline. I like your idea of keeping a "features" list and "questions" list separate. Otherwise, it gets confusing when the two get jumbled together. One tool that most hardcore engineers chuckle at - but that I love for the higher fidelity mockups - is using Keynote/Powerpoint. It is extremely fast to make things like buttons, move text around, etc. Most importantly, these tools make super e…
(My favorite design sessions remain the ones where I sat in a room, projecting my laptop onto a screen, and speed-editing CSS and PHP while my boss made suggestions at the front of the room. And then I'd go, "So, like this?" and refresh.)
Not really recommending it so much as saying it's a thing that can be done.