I think that one thing to keep in mind when embarking on a project like this is that people learn (and even store knowledge) in different ways.
For me, it doesn't cut it to have black-and-white (no pun intended), step-by-step instructions to get something done. It's very, very important to me to understand the question or problem conceptually before I try to perform a task (or take a picture). So that's why, in my post about light (lightwriting), I stuck to the mostly conceptual and basic mechanics - providing the info to make good decisions rather than telling someone what to decide. And, if I create any more posts for this section, they'll likely be about (illustrated) concepts as well - why the darned thing behaves the way it does (so the reader can make better guesses about how to get it to behave in ways that created desired outcomes - good shots).
As far as it goes, this site seems to be very, very much about crowdsourcing (photos, info, knowledge, experiences, etc.) and, therefore, I think that in this sub-forum (Photography), posts will probably run the gamuts of simple-complex, conceptual-practical, useful-lessuseful, etc. - but that's part of the nature of the crowdsourcing beast. I think that the best we can hope for is clear, high-quality stuff...and then fill in the gaps (subject matter, level of detail, etc.) as needed/able. Crowdsourcing is a strange animal in that it tends to grow from the bottom up rather than from the top down - in pretty unruly ways. I've never tried it, but I'm guessing that crowdsourcing prescribed/proscribed curriculum would get frustrating pretty fast.
I really like your idea of simple photography posts - and would encourage you not to abandon it. But I also think that there's a place (and interest) for the conceptual as well as more advanced topics. In other words, the audience here (as evidenced by the quality of the photos posted on the site) runs the gamut from novice to skilled professional - and, wonderfully, not only the audience, but the potential contributors to this sub-forum (read: teach me, please).
The one thing that would really, really serve this sub-forum well is organization - the ability to figure out which post to read to get your question answered. There's already a lot of good stuff here and I expect that the body of shared knowledge/experience will grow pretty quickly. Not sure if that's something that anyone wants to take on, but it would be incredibly useful.
Just my .02 on this nascent section - YMMV, of course.