I very much agree with this wish. We are a long time Revit firm and lately I've been looking at other options for us. Revit is great, but also complex and expensive (especially with the new subscription model). I find there is a lot to like about Vectorworks and have fun with the software. I do have concerns though regarding the graphics. They can be a little "glitchy" and updating the viewports in hidden line slows down the production process. More importantly though, I feel it creates the impression that the software is a little outdated. Other systems feel much more fluid as you jump from view to view giving the user a more modern and enjoyable experience. I have no doubt the Vectorworks team is aware of this and sincerely applaud the hard work they put into each release. Hopefully this gets worked out soon.
All that said, V2020 is a big improvement for us. On our Mac and PC computers the hidden line update times are greatly improved. Keep up the good work!