New display mode has only two pipelines: modeOpenGL, Technical2D

Why can we not choose Windows or Cycles when making a new display pipeline?
If I want to make a new Raytraced mode then I have to duplicate Raytraced. This isn’t a huge thing, but it seems strange that we can’t make one from scratch.

Also if I make a copy of wireframe I can not choose to shade the objects, so making display modes are a bit of hit and miss.

Jørgen