It would be very helpful if revision cloud could be a 3 dimensional item.
For example if you edit certain element you would add revision cloud in one view, somehow associate the cloud with the item (or creating a "bubble" around the item) and the cloud would appear in all other views around this element where visible.
I think it would be possible as this could behave similar way as callouts.
Or maybe an automatic revision cloud around any change or at least around a tag to highlight revision.