Now that we have Info Pane, I wish I could click on the commentary's cover image there and drag-and-drop it into some specific pane. Sometimes I don't want to open another commentary pane, I want to reuse existing pane. But whenever I click on commentary's icon, new pane is added, which I have to close later.
Or perhaps a Recycle Pane command could be added at each resource pane's gear menu in the top right corner? I'd check it and whenever I'd click a commentary link, it would open in that specific pane?