[BrianG]

To add to JThiessen's post: You don't need the Optidrive for reverse. It just makes sure that the truck is stopped before it will allow you to shift into reverse. If you take it out, just make sure you don't shift into reverse while moving, either purposely or accidentally.

If you don't need two speeds (which most BL systems don't need), you can lock the tranny in second gear. This will give you reverse and motor brake. This eliminates the brake servo and associated parts, which reduces weight.

TBH: The stock reverse mechanism is very weak. Many people have stripped it, even when using relatively low-torque Nitro.