— By David Dawdy — Alternatives to elevator lobbies are a game changer for the retail and hospitality industries. In 1980, a kitchen fire tore through the casino floor of the MGM Grand in Las Vegas. The inferno sent plumes of toxic smoke through the sprawling complex — including elevator shafts and stairwells to the floors above. Of the 85 people killed that day, 61 deaths were on the upper floors of the hotel — nowhere near the fire. These victims, as well as the other fatalities, died of …