On your point about the Buffalo crash and the feel being taken out of aeroplanes, the stick shaker has been specifically added to large aircraft to simulate the pre-stall buffet that you get when stalling a smaller aircraft. The feel goes as a result of the design features required to make large fast aeroplanes (swept wings, hydraulic controls etc), but it does get put back in. There's not much you can do about a pilot who doesn't react to the warning appropriately though.