The change history function is awesome, but I would love to be able to add my own notes/annotations to specific events that happen. It gives details for some things (ie, adding a click goal) but not others. I'm not sure what consitutes additional info, but there are a bunch of line items that say "updated" with no details. The notes section in the experiment details pane is supposed to be for test hypotheses, etc. but I've started using it for change control notes.