You're all assuming this game even has different visors and beams, or as many of them as we've previously seen. Maybe the weapons will be like Fusion where your new beam/missile type simply replaced your old one. Maybe the formula of this game will be wildly altered to suit the controller better. Maybe MP3 is secretly a 3D remake of Super Metroid. I mean, probably not, but we simply don't know yet.
Maybe the controller will have a mic on it and we can just shout "scan visor, plasma beam." And unlike my unruly Nintendog, Samus will do it because her only purpose is to please us.