Yes please, to all the above. @mortenengel answers are very much to the point.
I would like to add one feature request:
It would be great to have a way of drafting "within" kind of a clipping plane viewport (e.g. double click on the clipping plane, you enter this viewport). The geometry drawn in the clipping plane viewport can only be seen when you are using this viewport. (Revit is a good example for this.).
Why would I want this:
This would allow to make a section/clipping plane through the 3D model. Then enter the clipping plane´s viewport and add additional drafting information. In architecture e.g. we could add detail information, that is just not feasible to model in 3D. At the same time, this would not clutter the 3D model with linework. Furthermore, it is easier to track changes in the 3D model. When entering the clipping plane viewport, you will immediately see if the 2D drafted linework still matches the 3D section. Eventually it will be a huuuuuge workflow enhancement. Speed in generating and managing good construction set drawings is still a key aspect for architectural businesses.
Very important for all of this is some way of printing as vectors. The linedrawings do not have to be as precise as Make2D, but they have to be vectors. An A0, at 300 dpi is rejected by most printers and print shops. Even at 300 dpi bitmap prints still look like crap with dense line drawings and quickly becomes unreadable.