Is it just me, or could the people in a majority of these places (except very south) actually prefer the global warming situation to the current one? The projected map seems rather acceptable.
And ask people living somewhere that is stereotypically "cold" like Chicago if they want even hotter summers. They will say no.
1) In California and Georgia, given their farmland and competing urban needs, desalination is going to be a necessity even without any climate change.
It's not so likely that USA+Canada+EU+Russia will make huge investments to fight a process that won't hurt them but will hurt, say, Africa and southeast Asia. If you want to convince people to take action, then it's important to focus not on global damage but on local effects, since those are far more important to both decision-makers and voters.