Hi Michael,

Re generating line drawings

There are two approaches to how "views/sections/cameras" are represented on a sheet(communication)
1 Viewports
2 2D generation - is a problem approach in opinion of 99% of those who used both methods in actual work and cost Archicad a large decline in customer base when Revit turned up and offered method 1 (you may check out if you still have it)

SketchUp does not generate anything 2D for Layout as well - but does not offer the flexibility of Revit where you can create a view and annotate model only within confinements of that view so that it will not interfere with the rest of the model (all annotations belong to a view - not the model) and then place that view on a sheet(communication)

Another suggestion for how it all will fit into UI and not make any damage to the overall user experience - is again to use scene browser area and have possibly two modes for it (via main tabs?) - tab one: Scene, tab two: Views(Comm) which is where all sections/elevations/3dcameras will appear as views after their creation by sections or cameras - see illustration attached
or combine them without any higher level tabs (Revit case and is show in my prev mes) but after experience with such combined browser in Revit I can say that it would still be better to split the browser as it tends to collect garbage in various divisions(tabs) and user start to scroll too much

Hope you'll find this useful
Regards,
Igor