It would be good to be able to have custom ordering of rows in Pivot Tables and Table visualisations that isn't based upon Alphabetical or High/Low. My organisation has a preference to display certain divisions in a certain order that is not based upon a numerical value or alphabetical order.
I appreciate Parameters can be used to a certain extent, but the ability to "drag" rows into the right order in the visualisation itself would be much better from a user experience standpoint.