Quote - 2 - If you're selling a bedroom or big set... it helps if the walls, ceiling and floor can all be hidden separately so the camera can move around at any focal setting.

This is MOST important to me, and the one that many modellers insist on ignoring. I've taken to asking for my money back on items that do not allow for this. The argument that hiding a wall spoils the accuracy of IDL renders is hogwash... if that is important to you, you leave the wall in place and use a workaround. In my own experience, the effect is usually quite minimal, or can be "faked" by putting a primitive wall behind the camera.

Please include these features in your products!