It would be useful to be able to flick through layers in the map to view their properties without closing the properties window to easily review the specification of a lot of data quickly.
Perhaps by adding buttons (eg. "Next"/"Previous") within the Properties window to move up and down the list in the Catalog Pane while keeping the same selection of properties visible.
An example would be enabling a quick review of cell sizes for numerous raster layers just by clicking "Next". This would keep the "Source" tab and "Raster Information" sections open between layers.