I've thought about this and concluded that it needs lots of planning.
The benefit I see in SW is that it can confirm that the instruction I gave achieves the result I intended. Earlier software just implements my instruction, right or wrong.
3D is helpful for showing excavations, battered banks and concrete falls.
SW Drawings is rusted on to heritage concepts of drawing views, but other software can supplement SW to produce paper documents that take advantage of 3D. Check whether SW Camera views would be helpful in this context!
Question whether you need manufacturing models in site layouts.
The top assembly should have layout sketches or master part to avoid relationships between parts or subs.
Parts and subs should be positioned in the space of their own document, as they will be in the top assy so that they can be inserted as fixed, without any reorientation or mating.
Where mates are required for positioning, they should then be supressed and the bodies fixed in order to avoid evaluating the mates.
Bodies for which mass and centroid are not significant should be created as subs then SpeedPaked.
Pattern seeds should have neither mass nor mates.
Good advice. I think I need to schedule some time to create '2D Site Drawing Specific' model configs for this type of work. We only end up spending abour 5% of our time on this type of work, although this seems to be changing.