WOW there is alot of really good info on that page.

The speed of response of the flybar to commands can be adjusted as follows:

# Increasing the weight of the paddles slows it down.
# Increasing the area of the paddles speeds it up
# Increasing the rotor RPM speeds it up
# Increasing the aspect ratio (span/chord) of the paddles speeds it up.
# Increasing the length of the flybar speeds it up.




So decreasing the length slows down cyclic response, and stability.