Are you planning to add mouse gestures to Directory Opus?
Or adding the ability to double-click on an empty area of the taskbar to open a new lister?
Not planning that in the near future, at least. But there are gesture apps for Windows which let you add gestures to any software that supports hotkeys and/or command-line automation, and Opus supports both.
More info and links to several tools and related threads can be found in this thread:
I use StrokesPlus.net daily with DOpus. Works well!