Better controls for Appearance panel: multiple stroke selection/scaling/editing

[Rudantu]

The appearance panel is great! I love the trick of alternating strokes to get a multi-stroke effect. See attached for example.

I have been stress testing this use case and I have some serious frustration points :

1. I have to edit each stroke one at a time. I kinda want to select multiple, duplicate settings across many, such as 'scale with object' or round/square etc.
    
2. Once I have all the strokes set up how I like, copying the style to other elements is very unpredictable. The last selected stroke in the list *Only* will have a scaling applied (I assume based on its 'scale with object' toggle). Attached is a screenshot. See how after the copy/paste, one of the strokes (the selected one, indicated by the dot in the appearance panel) has received the 'scale with object' transform while the others have not.
3. Now, lets go to the Style panel to save the effect, the same problem will occur when reapplying the style- only one of the strokes last selected will be unpredictably scaled.

In theory my solution is that All strokes scale uniformly when applying to new objects, and I can easily disable this by selecting all the strokes in the appearance panel and unchecking 'scale with object'.