Another functionality that would serve a similar purpose would be to add support for drawing on a plane in the same way as how 3D CAD works and let Icon-O-Matic handle the perspective automatically.
In the article example there is a box with 3 planes (top, front, side) all with a round shape. Instead of manually having to create the perspective thru shearing, a perfectly round circle could be drawn on one of the planes in 2D and Icon-O-Matic would handle the perspective automatically.
