Couple of ideas appeared in the comments today. A great idea to use the mouse for the paddle controller, and Pinball. Pinball really needs the overlay to be playable, so I ran a cartridge through my scanner (so I can get the scale right !) and painted in the areas to get a very rough and ready copy of the pinball overlay as a PNG.
So today or this weekend I'll get that up and running and make the mouse control work.