Yes… The reason for taking them into DWGS was for compatibility with the rest of the industry and the scale of the projects [ very large].
Re your other questions maybe look at these forum topics… for some ideas
Personally I go around the linetype weight and hatching concerns by using shadow and colour
You can also use something like “Curic Section Lite” to to hatch patterns
Personally I do everything in 3d in SU and extract the 2d views for presentation in LO, standard workflow but your approach depends on the scale of the project and level of detail…
Nick Sonders workflow is a well resolved system for residential documentation and following it would be a good core structure for you residential work.
My workflow is a little more relaxed / flexible but I an dealing with scales from street signage to large urban master plans and highrise residential towers with documentation phases form schematic to construction.
Highrise example is a LO section thru a 3d SU model, 1:1000 0n A3 but exported as DWGs at 1:500 on A1 sheets for a local consultant to translate into local language and comply with local authority submission requirements, the sections in this case stayed as jpg images [at 1:500] and the local consultant added dimensions / notes / titleblocks in autocad… in the worst case the local consultant would edit the section in photoshop if minor amendments would be required but these drawings don’t change much [particularly if you have developed the design in 3d anyway]