Let me start by saying how much I like Strokelt. You have built a great application.
For people with TabletPCs, it would be great to be able to take advantage of the 3D nature of the tablet pen. For instance, I would love to be able to gesture while hovering with the pen button depressed. This would leave my right "mouse button" free for other things which is very desirable when working without a keyboard.
As far as I know, no other applications take advantage of this dimension of the TabletPC, so StrokeIt could be a first!
Thanks.