Braiding the motor wires will not be so helpful. Braiding or twisting is commonly used in telecommunications to eliminate crosstalk on heavily crowded cables (pairs of wires packed in as tight as possible to save space). the space between the motor wires will not be subject to the same EMF. Hitec is one of the few that twists their servo leads.

Of course keeping the RX antenna and servo leads off of a carbon fiber deck wouldn't hurt and neatly bundling the servo wires makes a clean easy to work on area.