I never like it when the big color chooser with the square color gradient and numeric fields pop up.
Why does it exist?
Would like to have a user preference to choose the color picker in stead of having Illustrator to popup with several different color mixers.

When double clicking the stroke or fill color, the big unusefull (imho) thing pops up, when clicking a swatch, a compact mixer pops up.

For me, it would be nice to construct my own combination of color mixers: RGB and HSB in 1 view, with sliders, without the big picking gradient, without cmyk, without hex. And with a context sensitive button 'Add to Swatches'.