It would be helpful to quickly identify what material is being used on a rendered part while in render mode, especially when multiple materials are the appearance window and many look the same. I know I can rt-click and see properties but it's not as direct, or consistent, and sometimes long names are cut off.
I would like to click on a rendered part, in render mode, and cross-highlight the appearance swatch with the model in a similar way the modeling/parts interface works.
It would also be useful to be able to expand the Appearance window rather than have to scroll the swatch list.