Exactly!

I just finished setting up a U-Can-Do and I'm glad I had 9 channels available.

On my little Bobcat 50, one channel controls the nose gear, another the retracts, a channel for each aileron ( so I can implement spoilerons ), etc.

The seperate nose stearing channel let's me shut off this servo in flight, preventing it from moving with the rudder....

Once you are beyond a 2nd plane having those extra channels is a blessing.