A. Swoop, I think he means when you are in the driver's seat, the JS does the steering, but would be good to be able to slew turret with rudder, so you could be driving around obsticles, away from a threat, while at the same time getting the turret in position for a shot.
B. No
C. Would be a nice option for rudders with toe-brakes. Right toe, gas, left toe, brakes.
D. Would be a nice option
E. I don't think PTs back than had prop pitch. They may have had trim planes on the stern at the water line, but those are only useful in RL conditions. IE, we don't have waves and chop in AH water, so there is no need for trim to adjust boat ride.