With the news Wednesday that Massachusetts Attorney General Martha Coakley has “lost confidence” in the multistate AG talks with five big banks and is revving up to sue, coupled with last week’s announcement by California AG Kamala Harris that she’s also dropping out of talks and launching her own investigation, I’ve been wondering what shape an AG suit against mortgage lenders would take. I reached out to both the New York and Delaware attorneys general offices, since they were the first to start talking about filing their own cases. They didn’t return my calls. But according to the bank lawyers I talked to (caveat emptor), there’s a huge gap between the wrongs the states will be able to show and the relief for troubled homeowners that they say they want.