I know nothing about Golden Rice so I can't comment on that. I think the position I'm making is that it's likely that GMOs will be inferior for all the reasons already cited. If you're trying to be more profitable, you put nutrition in the back seat. If food is just a bunch of macrobiotic chemicals disregarding a looong history of natural selection with intricacies we've only begun to understand, chances are you will not "get it right" in terms of nutrition and health of the consuming organism.