If I had EXPO on my rudder I might not even have dual rates there, either! I agree that rates are important for 3D and some higher level aerobatic maneuvers. Not needed for for Sportsman's level pattern flying, and probably not for most other beginners.
I might have underestimated the OP though, now that I re-read the post. It was suggested to me when I started to not bother with mixes and rates until I could really fly the plane, and I've learned that that is some fantastic advice
I don't have expo on the throttle. Don't even have it on the rudder! The Airtronics RDS-8000 is a good radio, but a starter radio for competition flying as far as I'm concerned. It will be replaced within the next few years - maybe a graduation or christmas present in 2010