I am a long time AutoDesk products user and do have instances where I don't have time to develop a solid model, but this is mostly a me limitation...I've just used AutoCAD for so long that I'm faster with it...particularly in 2-D.
Not to mean anything bad, but .... I think you still do not know SW well enough ....
For me, going from SW back to ANY 2-D system (and I knew CADAM, AutoCAD and Cadkey rather very well) would be like going from 2-D system back to board ( and my first 8 years of my engineering "career"
were on the board ).
The other day my boss in the office asked me to do some floor plan for his house - strictly 2-D (I guess the other "boss"
wanted to move some interior walls and rearange the furniture ).
Well, just opened SW dwg template and saved as dwg. Then went to "Edit Sheet Format" and ereased the company title block, logo etc. Back to "Edit Sheet". Insert "Empty View". And start to draw the floor plan.
Big advantage over the AutoCAD - no need to do any OFFSETS and all other (AC) crap. Just put dimension.
Need to move the wall ? Just change dimension. The house floor plan would not fit into the dwg ?? Just change the scale. Voila - that simple.
In fact, if I were to do it in AutoCAD, it would have probably taken me 10 to 20 times the amount of time - I forgot quite a few AutoCAD things, thou I have had about 6.5 years of AutoCAD experience before.
Last but not least - the fastest way to do a 2-D drawing is on a serviette using a ball pen ...