The code required to make something like this happen isn't available to us. The entire mechenism for adding, removing and naming chat tabs on the fly is hard-coded. Likewise the hotkey window is dependant on a very specific structure. Finally, we have virtually no way to manipulate drag-n-drop behavior.
What you're asking for would require real coding, not scripting. I suggest you post your request on the SOE forumns.
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