When you change a texture or some visualization on an object that cant be viewed unless you render, then it takes time, even with the simplify option checked depending on your mesh, to render the object and view it, and even then you only see a little space of your object depending on your camera view. I'm submitting this idea because it would allow the artist to view the fully textured and rendered piece in 3d space and it would save time from checking the simplify option and rendering.