I would love to see "mouse rocker" button support added to StrokeIt. Users of the Mouse Gestures or Mouse Rockers plugins for Mozilla/Firefox will know what I'm talking about.
Basically, a rocker gesture means you hold down the right button, then click the left (and let go of both) to navigate backwards, say in Windows Explorer, or vice versa to navigate forwards. You can see why it's called rocker navigation, because you "rock" your fingers over the buttons. This is even easier to use than gestures IMO.