Identifying Painted Objects
It would be helpful to be able to identify that an object has been painted without having to use the "Remove Paint" tool to hover over objects and look for the selection preview to show up. Perhaps there could be a built-in parameter that shows up in the Properties Window that signifies that the selected object is painted, or that shows a "Painted Material" field.
It is frustrating to try to figure out why something is displaying incorrectly, only to find out that it has been painted by using one of the smallest and hidden icons on the Ribbon.