Just before Thanksgiving last year, a group of former aides to Mitt Romney convened at his salmon-colored Belmont home, many of them gathering for the first time since Romney had disbanded his presidential campaign some nine months before. Romney had invited them for a post-mortem of the election weeks earlier, the type of dispassionate assessment that the Harvard Business School alumnus so enjoyed. But over cookies, they found few of the metrics for success that Romney prized -- Republicans had been decisively thumped at all levels -- and his attention shifted from 2008 to the future.