I use Edit>Edit Colors>Recolor Artwork so very often that I have replaced the “Rulers” keyboard shortcut with “Recolor Artwork.”

“Character Styles” and “Paragraph Styles” are invaluable tools, but I REALLY would love to have a dialogue box identical to that of “Recolor Artwork,” except for swapping & changing type, character & paragraph rules/styles. If necessary, I can create a mockup of the UI that I have in my head for this, but I’m not planning to, unless it is necessary.