A great improvement would be to have StrokeIt select things and act over them.
Scriboli is a project that have a way to do this and could be implemented as a plugin I guess, since no changes were included into Stroke It since 2005.
http://research.microsoft.com/users/kenh/papers/Scriboli.pdf
http://research.microsoft.com/users/baudisch/projects/scriboli/
Have a look at it. I think gestures are the next Mouse.