Maybe like the final draft, overlayed with a heatmap of how much editing was done, then on clicking, provide a tree like comment history of each branching edit.

Maybe like the final draft, overlayed with a heatmap of how much editing was done, then on clicking, provide a tree like comment history of each branching edit. This could show the anatomy of how different people form thoughts in written word. T his is an insight we could learn much from at a massive scale. I would imagine Facebook or another hosted blogging platform could get this data with relative ease.