Being a foreign language speaker (or writer and reader to be more exact) I would prefer to see the changes in a side by side diff tool.
The current format with the two above each other doesn't make it easy to recognize the improvements.
The revision diff list now offers a side-by-side diff in addition to the inline diff. Because of the page width issues Jeff mentions, they're narrower than the final output (just like the side-by-side diff for suggested edits), but they're there.
I have implemented this feature request as a user script.
See Stack Exchange Side-By-Side Edit and Preview on StackApps.