I say, bring it.
Agriculture in vast areas of Canada are opened up.
Alaska is tamed.
Antarctica becomes a viable destination.
Asking anyone who believes in the AGW nonsense what they think the ideal planetary temperature is, and more puzzling on what they base that opinion, should shut them up and make them think. Unfortunately, they have had that ability drilled out by the Ministry of Truth and their only response is sputtering rage. Even more unfortunately these computer models are utter horse s#!+ so nothing in the first paragraph is at all likely to occur within our lifetimes.