Few features can be included such as 1) 3D views 2) Layout Views. For 3D views, there is a software wrritten in java named Fachwerk3D where the 3D view can be rotated by means of slider in horizontal as well as vertical direction. Attached is the png file showing the details marked in red colour.
Layout view can be added for each drawing in the same panel.
Fachwerk3D screen shot