I'd like the ability to adjust the level of KeyShot's "floor" reflectivity: IOR, specularity, noise, and possibly even add textures. I know I can quickly create my own floor for this, but the nice part about rendering with the Keyshot "floor" is that I can render with an alpha channel and quickly change out different backgrounds in Photoshop while maintaining reflections and/or shadows generated in KeyShot. Ultimately, I'd just like a little more control over the level of what passes through with the alpha channel.