Compare Revisions

I'd love to see an enhancement to the Revisions pane that more easily shows what was changed between edits.

Right now it is fairly cumbersome to figure out what edits were made. If you're looking for edits to the text of a story you need to copy both versions into a third party editor and run a comparison.

In my mind there are a few options that could be added:
1. A simple summary that displays on mouse-over maybe. That reports something like:
10 characters added, 1 section added, 2 sections removed, 1 geolocation added, 1 child asset removed.

2. On the more advanced side, a Wiki style history panel that shows changes side by side for quick reference.

What do y'all think?