At the moment the Command.cs module do not support the analog input from Thumbstick and Triggers.
Add this. For example:
// Move Kokichi with thubsitck
float maxSpeed = 10.0f;
Vector2 thumbMove = new Vector2 (newGamepadState.ThumbSticks.Left.X * maxSpeed, newGamepadState.ThumbSticks.Left.Y * maxSpeed * -1.0f);
kokichiPos += thumbMove;
// Use lefttrigger to do change kokichi scale
kokichiScale = newGamepadState.Triggers.Left + 1.0f;
// vibrate left and right rotors with triggers
GamePad.SetVibration(PlayerIndex.One, newGamepadState.Triggers.Left, newGamepadState.Triggers.Right);