The Motion Boutique just released and awesome free script that helps control multiple 3d layers in After Effects. You can control every 3d parameter that is available and even toggle 3d on and off. This isn’t just for multiple layer use, you can also use this palette for easier control of 3d layer options. No need to flip down controls for each layer you can quickly change options just by selecting a layer.
Grab the free download from MotionBoutique.com