The # of channels isn't that important, it's the ability to plug in servos individually and control them individually. Flaps, ailerons, inner ailerons and spoilers on a large sailplane are 8 servos. Add rudder and elevator, tow release, retracts and canopy opening and you are in the 18 channel world unless you join something, which eliminates being able to control them individually. This is a sailplane load. With a scale ship, many more servos can be used. Using X-bus, each servo can be controlled individually. Do we need 28 channels? Nope. Can we use 28 channels for every day flying, probably not. Can the scale and giant scale guys make use of 28 ports, absolutely. This isn't an everyman's radio, it's the 911 of radios!