I don't completely agree I think we need to make something that tastes good, is healthy and cheap. As well as something that can also be adopted in as many of the worlds cuisines as possible instead of looking for replacements we should look for something that is liked or loved as that is the only way most people are going to decrease the use of meat. Then we need that ingredient to be adopted by the fast food type restaurant's of the world for it to penetrate into the minds of the world's populations.