There are many "would-be-nices" here, especially in the CC area.
Following Chad's advice of November, you should post your wish to the forum <wg>
Before becoming grey while waiting for an official solution, you might follow this client's workaround in Windows:
Open the CC page
type <ctrl>a (mark all)
type <ctrl>c (copy to buffer)
Open a text or spreadsheet program
type <ctrl>v (paste buffer)
Now you have the members' list downloaded, unfortunately with some crap between it and in a difficult format - work on it! :)