thanks for filling in. I was out of town this weekend.
2D sketch rendering right within ArchiCAD is on my wish list and I think that it could happen. It was not too long ago that some of us were wishing for trace layers that work in elevation and section.
As described before, 2D sketch rendering (of elevations and such) is there within Archicad already. You'll just have to explore the possibilities some more. You can easily combine Archicad's sketch rendering with any color rendering, done within or outside Archicad, using any photo editor, which you are likely to need anyway if you design using light and color as you describe.
Piranesi is an excellent way to streamline the process, and will pay for itself in a short time if you want this kind of renderings often. But what you do in Piranesi can technically also be done in Photoshop or any photo editor, if you are willing to spend hours and days to achieve that result.
Archisketchy is a way to get an Internal Engine rendering look hand-drawn, by simply replacing the ordinarly straight lines with "squiggly" line types. It will not replace the more advanced Sketch rendering modes.
Archicad is a very advanced program for modeling and designing buildings with intelligent parts, containing lots of information and a streamlined workflow for documentation for informed desicions and construction.
If all you want is a drafting package, you'll probably be better off with Sketchup. You'll have to study and learn the more advanced capabilities of Archicad to utilize them properly.
AC4.1-AC24SWE-25INT; OSX11.5; MP5,1+MBP16,1