I have finally taken the time to put my mental concept for the HO scale Middle Division down into words for all to share. You can read it here on the Middle Division Musings blog. It is a permanent page accessed via a tab at the top of the page.
This is a work in progress and will be updated from time to time. My next task will be to post the model railroad design, which is a fairly involved task, as well as the operating plan.
Some really great things are in the works that I can't share just yet, so keep an eye on this space!