No. We will not be making our manuals editable.
If you want to make notes, print it out. Marking with a pen is far simpler than any on screen editing. If you consider what you are doing "laborious," it's something you decided to do on your own with little-to-no benefit. Keeping track of where you are in a manual is incredibly simple, just look at the picture... has the step been done? If so, move on, if not, go back. Or when you reach a point where you are stopping, write it down the last thing you did (i.e. last step on page 24). Leaving the document open to where you last used it would also achieve this (Preview reopens a PDF to the last page used AND has an "Add Bookmark" feature).