I really do enjoy this addon, and I've been using it for a long time. But there's just a couple things that I think would make this addon even better.
1) Sorting chat histories alphabetically - I've spent minutes (literally)scrolling through the history, God forbid you bump your mouse and close the menu.
2) The only other thing that I feel's missing from this, would be the history-text editor WIM had. It made blackmailing so much more efficient.