Most CAD Software (Autocad, Nemetschek, Microstation, Archicad) provide Continued or Chain Dimension objects.
These simply the handling of Dimension objects by allowing to…
… create a coherent dimension chain (not single objects)
… insert a dimension within the chain (while automatically adjusting the neighboring dimensions)
… continue the dimension chain in both directions (by automatically taking on the adjacent dimension point and position)
… modifying the position of the chain in relation to the drawing
Could this be introduced in Rhino 6? This would be great while making Rhino even more interesting for architects and designers resp. people creating production drawings.