Not only slip / spin, but CG effects too. I was a poor student back then. Couldn't afford multiple planes. The guy that taught me to fly was a pilot and A&P. After I was proficient, we started changing things. First change was to move the battery pack toward the back to shift the CG. Then we increased aileron / rudder travel. Each time, flying the airplane to see the difference.
If I really wanted to make the R/C experience more relevant to a full scale pilot, I'd put an undersized engine on a flat bottom airfoil trainer. Models have waaay too much thrust, but other than that, they seem to be very high fidelity third person view sims.