There is room for a lot of improvement in the Symbology pane.
1. I'd like the option to be able to view all symbologies alphabetically (as it is now), OR by the Symbol Layer Drawing I have set. In other words I;d like to be able to view the symbology list in the order it is drawn versus alphabetically.
2. In the Symbol Layer Drawing dialog I'd like all values shown versus having to click on each to expose their properties.
3. For maps with MANY symbol values it would be nice to have the option to open and entire screen in order to manipulate and move them around,
4. I'd like all changes I make to the symbology pane (or screen - see suggestion #3), to take effect when I hit an Apply button. This would reduce re-draws.