Saved styles is a nice to have, but I think for the time being find & select can accommodate most things.
I think styles would become a little restrictive (like Families in Revit) depending on it's implementation. If it's like Adobe InDesign where you can override parts of the style then this would be more flexible.
I'd like to see styles used for things like the appearance of schedules, appearances of 3d documents and text styles within a single text box (like character/paragraph styles in InDesign)...
James Badcock
GRAPHISOFT Product Manager