A common alternative to glazing in Europe is polyester powdercoated insulated aluminium panels or opaque ceramic glazing.   So we'd like the ability to control the attributes (colour, texture, etc) of individual panes/panels, including by Class, as we can with Curtain Wall panels.     See also: https://forum.vectorworks.net/index.php?/topic/64381-window-and-door-tool-maturity/