I apologize for our lack of Roadmap. My experience has been that adding new helpers consumes more overall time than it saves...but that does not excuse my failure to lay out something so basic. I am drafting a version as we speak and will probably finish it up in a day or two.
It will (hopefully) include some descriptions of where everything is, and what the various classes are, and what I plan to do, and what I hope other people will do. Then, I'll probably post weekly updates.