for story history log story status changes via story details drop down list same way as they are via buttons

Think in this scenario: Product Owner (PO) request a story. Then developer starts, finishes and delivers that stroy.After that QA Reviews and accepts the Story. Then PO reviews the accepted story but finds something QA missed. The next step is PO open story and change its state to rejected.
Tracker currently records this event in history as "PO edited story X". It would be great if it could record the event as "Rejected by PO" so this could be noted when generating the progress report.
Being able to see the story status changes in history done via the story buttons or drop down list in story details could show a better useful story lifecycle don't yopu think? :) Congrats for such a good app. :D