Hello is there anybody here?
The semicolon could be used to toggle FARR.
But holding it down could activate the AltTab function.
While holding it down we could start typing and upon release the desired window should launch.
Perhaps tapping semicolon twice, or ';'+'Spacebar' could enter the ';'.
This would be combining the best of Enso and Keybreeze - in terms of speed and fluidity.