Plans to bend the health-care cost curve are pretty plentiful in the nation's capital. Lots of think tanks and coalitions have plans to cut billions (even trillions) in health-care spending. The Partnership for Sustainable Health Care argues it's something different. The new alliance, which includes health plans, a hospital and consumer advocates, isn't looking to bring fresh ideas to the debate. It recognizes this city has no shortage of think tank proposals. Instead, the Partnership wants to start putting political muscle behind the ideas that already exist — and, after it does that, pass legislation that would control health-care costs in a way the Affordable Care Act doesn't.