Currently, the edit review queue history shows whether you voted to Approve or Reject (or Improve, I assume) a given edit, but you have to click on it to see whether or not the edit was Approved or Rejected overall.
It would be good to indicate in some way the final result of the edit along with your vote. This could take the form of another column, color coding of your vote, or just an icon when your vote matched the final results.
This would be good for new reviewers (such as myself) to be able to look at the ones where we "got it wrong" to see other people's reasoning. I'm sure experienced reviewers could find a use for that information as well - spotting "serial approvers", maybe?