Add support for the cameras from 3d packages, it will make you will give a strong advantage to artists in all directions, because then it will become realistic to work with bad scans that are based literally solely on virtual cameras. Also in any other CAD software you can't work with them, you'll be giving a strong advantage to your users. And Vehicle Artists will find it much easier to model their cars more accurately by reference, because as everyone knows, free car drawings from the Internet are very poor in quality and often have little in common with real cars.