Hello Panel, and welcome to the CircleDock Forums here at donationcoder.com
Your suggestion is an excellent one, and the suggestions has been moved forward to the developer.
I would also task you though, and any others that would read this.
So far a lot of the suggestions for an Icon "Hover Over Identifier", for lack of better word, has apparently been derived from other launchers (ie. Objectdock, rocketdock, etc).
Does any one have any original ideas. Something that may set Circledock aside from the normal pack?
Let us know, and will pass these concepts along in my monthly e-mails to Mr. Wong (aka VideoInPicture)