If you don't have your servo linkage set up mechanically with the correct maximum travel in each direction, you are destroying your resolution capability when you even it out or reduce it with the computer.

Computers are mighty nice though. I like high rates with a lot of expo. It's a real hoot at times when you are in the mood.

I like to be able to slave the second elevator servo to the first with the variable to get them to work the same or to correct aileron servo differential travel volume to allow for adverse yaw.

Slaving a little rudder in with the ailerons is nice as well as a little elevator with the flaps