A small issue but a persistent one: Since the early days of Illustrator I've been unable to copy a line of text from the artboard directly into the 'save as' dialog box when at the point of saving my work. Reason being the filename is always present in the documents I create for my clients and it seems unwieldy to type it out twice.
(nb I can work around it (but it's cumbersome)—and that is to copy>paste>copy again the text using the find and replace window)