When working with unique values, we often will need to refine and group some of our listed values for symbology after the fact. Let's say one value isn't needed anymore and you want to group it with others, or it makes sense to group them later after doing all of your in depth symbology work.
When you group your values at this point, there is no control over which value's symbology is kept, unless you know to select the one you want to keep first. In my experience, very few users know about this, and time/frustration could be saved by bringing this to the forefront or having a simple prompt to select which symbology you want to keep.
I'm suggesting when clicking Group Values, a prompt for keeping symbology/formatting of one value over the other here.
Simple example here, but I think we've all gone through a lot of trouble figuring out complex symbology for polygon features, just to have it get messed up here.
