Something like a special desk with a diary on it, in which you can choose old cutscenes to rewatch. Or a new item in the Wizzards Basement or the Witch Hut which would take some form of payment to rewatch cutscenes
This would be really nice! 1.4 did add a way to re-read mail you've recieved so this would build on that idea. It could be part of the collections tab, maybe labelled as "memories"