I worry that even well-intentioned attempts to "improve nature" (say by reducing suffering) will make things worse even in their own terms.

Progressive Consequentialsm requires us to make the world better but we are under no obligation to bring about the best possible world.

I think the mother of all arguments against eating meat now is the climate change argument. Methane is a much more powerful greenhouse gas than carbon dioxide and when we eat meat we wipe away many of the good things that we do when we try to create greener and more sustainable practices in the rest of our lives. So if you add the concern for climate change with other concerns that were there. I think the case for vegetarianism is pretty overwhelming.

In this era of globalization we are witnessing struggles within individual states about what their identity and interests consist in.

What most forms of Consequentialism cannot do is require us to act in such a way as to make the world worse, yet many of the objections to Consequentialism purport to show that Consequentialism requires us to make the world a stinking, bloody mess. The ubiquity of these kinds of arguments shows you just how unseriously many of the critics take Consequentialism.

The millennium development goals are important, both morally and economically, because much of the world's population maybe is as much as a third of the world's population hasn't yet reached the level of economic development where we begin to get a dissociation from people's economic status and their reports about personal happiness. So we really do need to do much more and much more effectively in order to give everyone the kind of basis for which they can have good vibes.

Some philosophers think that the idea of a consequentialist virtue theory is strange, but the real strength of consequentialism is that it can emulate the requirements of other moral theories when it is the case that acting on those theories would improve the world.