I miss something or support for the new Style classes seems to be weak and buggy. This is what I found mostly browsing with the VBA debugger:
StyleOutline shouldn't include the Arrowheads? It doesn't.
Some Style properties, like StyleOutline.Width, are constantly zero, disregarding the actual width.
ShapeRange should have an ApplyStyle method. And now that CorelScript is gone, some kind of FindStyle method should be very useful.