I'm not on the council...do they have cookies? Oh well...I'll still add my 2 cents...
I don't subscribe to a word count requirement, or number of hours contributed to a piece of work mandate. If I was to do that, it would turn writing into a job more so than an adventure. And for me, writing is certainly an adventure, and I'd like to keep it that way. Plus, I don't think writing should be forced. I still have goals I'd like to complete in certain timeframes, but those timeframes are a bit loose. They're more monthly, even seasonally, since the goals are more broad...title, outline, chapters (not always in that order).
Because of the type of writing I do, I can skip around a bit. For example, I completed parts of the end of one book before I came up with the title or even worked through much of the outline. The other book doesn't necessarily have to be read front to back, but rather a reader can jump around from one chapter to another, non-subsequent, chapter. This allows me to write the chapters, then put them in whatever order I prefer. I like doing it this way because I can work on whatever aspect or part of the book that excites me at the time, which results in me putting out a better product. I don't write non-fiction, so I cannot speak for that genre, but perhaps the same style of writing can be used for that as well?
Anyhow...I would encourage any writer to just have fun with the process, however they choose to go about completing their book(s).