this is why I use a template flie, with all settings (like color, line weight, line type, ecc ecc) ready on some layers,
a small python script to rename the layers with the project name,
and then, launch make2D choosing the layers where rhino is going to put the lines.
But, unfortunately, I will not be able to do this on V6.
I make hundreds of 2D, It will be heavy to do everything manually.
I will stay with V5.