It would rock if when I sued this button once to do a Regular Expression Relacement say, I could click it again and get the same one without having to type it in again.
In short if the second level of dialog box, the settings sepcific to each quick action, were also remembered.
Yes, I could code it up under teh Actions button. But sometimes, often in fact I have something I want to do on this one set of albums I working with but which is not generalized and I don't want it in that list which is already cluttered with a thousand pretty general actions I do. I'd much rather have the Quick Actions button remember everything I do, so I can repeat it quickly.
An alternative might be a thrid button like "Repeat Action (Quick)" to repeat the last quick action.