You know, if we're gong to do the whole GMO thing anyway, maybe someone could work on modifying a grass so that it wasn't all indigestible celluose and instead had human-accessible protein and carbs in it. There's really interesting and admirable work going on trying to develop perennial grasses as a productive, resilient, sustainable human food source, which is doubtless preferable...but it has to be focussed on grass seeds, because we can eat the seeds. But what if we could eat the grass itself? We can't become ruminants, but we could become the ecological equivalent by changing the output end of the grass sunlight-conversion machine so it matched our dietary needs and capabilities better.
Hey, and SC? Funnily enough, Manchego is basically my absolute favorite cheese!