I couldn't agree with you more. Your comparisons are humorous and right on. I've been pulling out my hair for years due to vectorworks line thickness inconsistencies. I love most aspects of Vectorworks- the simplicity, intuitive drafting UI, and neutral interface. And unlike other CAD programs, there is no complicated method of printing. It prints what you see. What a concept. (autocad users will know what i'm talking about)
The line thickness issue is the main reason keeping me from upgrading to new versions of Vectorworks. In fact, we've been trying out other software and the first thing we confirm is the print line quality. As you mentioned, Architects are very visual, and precision prints are the most important products of our work.
Nametschek, Please step up and resolve this issue!