Process: discussion of questions
It's been a few weeks since you posted this, and we're starting to see patterns that may help us answer these questions. First, activity on the QNA pages has basically stopped. Most of the discussion is happening on the Task Force Talk pages.
The Task Force discussions are in desperate need of refactoring and organizing. We could take advantage of LiquidThread's summarize feature as one way to do this. Another way would be to reintegrate Task Force discussions back into these question pages.
Thoughts?
Refactoring – Some refactoring between task force "project" pages (work product such as research findings, draft proposals, etc.) and "discussion" pages would probably help, together with another "Next steps" outreach. Once the TFs get oriented, goal-directed development of project pages could help move things along. (I have only been watching a couple of the TFs, but in those ones it seems to be just TF members participating. I have been waiting for the TF whose QNAs I commented about to get organized before commenting further.)
QNA – At this point, I lean toward option 2 above. The QNA were fine for stimulating thought, but the types of questions are very heterogeneous (stub proposals, research topics, rhetorical questions, etc.). After the initial woolgathering, I think they need to be adopted in a result oriented context, i.e. a TF or a Proposal, to achieve closure (or orphaned if they are moot). I also suspect that the heavily templatized structure of QNA pages is a bit of a barrier to participation. Picture someone who hasn't a clue about templates trying to pose a question, and notice that even a very experienced wikimedian didn't immediately catch on to the setup when rephrasing some questions.
LQT – At least one task force has struggled with LQT because the familiar MediaWiki way of structuring a discussion doesn't work on that platform. It is a little challenging to learn an unfamiliar interface, alpha test an implementation in progress, and be productive at the same time. But one has to love a challenge to undertake strategic planning anyway....