other than for troubleshooting and adjusting, there is no good reason for a remote control feature on the slide out units... its great when working on them and adjusting them, but for normal use, they can only cause more damage than the convenience of the feature would ever be worth...
when traveling, inside the coach ive had cabinet doors come open, chairs tip over in the rear of the trailer, a bottle get loose and become lodged behind the facia seal, a coat fall off a hook and get behind the facia seal in the bedroom, and other small things that if I wasnt there, watching intently as the slide units when out, it would have been an expensive lesson as it ripped the door off the cabinet while the facia seal was torn loose from having stuff get between it and the wall where it seals.... and I always do a walk around inside and outside before retracting the slides...
but its an extremely cheap and simple matter of adding a remote if one has the desire to add another option that has more potential misfortunes than it ever will have benefits to it....