I have been in the business of Class A surfaces for automotive applications for at least two decades. Evaluation of surfaces, is the basis on which all the design and modifications are made. One of the perennial problems haunting the industry is the display tessellation of surfaces, especially the trim edges. There is a always a tradeoff between fidelity and speed (resources). The current acceptable deviation of tessellated triangles to original geometry for exterior surfaces, is around .001mm. At this resolution, only a limited amount of data can be effectively analyzed. I think both Alias and ICEM Surf have to deal with this issue, on a day to day basis..
I read somewhere about trim surface tessellation using OpenGL 4 techniques significantly improves the display quality, without running out of resources.. and possibly a trim edge representation using transparency masks? (uniform tessellation without densely triangulated trim edges)
Are there any plans to improve the display fidelity and speed in V6? If such a thing can be done, I am sure Rhino would make significant inroads into the Automotive design / evaluation market..