I believe that Clipping planes could be made much more usable for actual modeling if they had an option to leave the clipped side of the model visible as a wireframe, which means they should hide only the rendering geometry. This way, even the shown control points, points and curves will be still visible everywhere, making it really convenient to work inside various types of compound closed objects such like buildings, cars, appliances, machines etc.
You can even expand that functionality by giving the user a freedom to choose whether the clipped volume will be completely blank (the current implementation), wireframe, ghosted or any other of the available display modes.
Currently, it’s somewhat possible to see the wireframe of the clipped object (only if it’s selected), so the base code is there and just needs to be adjusted a little bit. To do so, the tickbox from “Clip selection highlight” must be removed. However, the downside of the current implementation is that the object must be selected, in order to see its entire wireframe, which adds a risk to move, scale or rotate it by accident. It also renders the wireframe in bright yellow, which is the default colour for selected objects in Rhino. There must be an option to show the full wireframe of a clipped object in a custom colour and without the need to select it first.
