Clean dwg export

[alemanda]

it would be very useful a clean dwg export from Archicad.
Specially when many fills are used dwg export is very "dirty" so that autocad users complaint about the drawings we passed to them.
I hope GS implement an automatic and hidden (but also manageable) "lines and fills consolidation" before every translation to dwg (or other formats) in order to have few superimposed items (lines above lines above lines and fills above fills above fills) ...