"...it could be one of the best ways to address our healthcare crisis." It seems to me a great deal more people face a very different question, "how can I afford to live longer?"
Those two are connected - in particular, issues related to aging are a huge money sink, so just improving healthspan without improving lifespan would not only make a difference to people, but also free up resources in healthcare.
Lifespan has increased dramatically over the last 50 years. In "Being Mortal", Atul Gawande argues we haven't figured out how to live with the substantial increase in life- and health-span that medicine has already given most of humanity.
Recent discussions around ageism in the workforce (e.g. Tad Friend, New Yorker, 2017-11-20) highlight the double edged sword of increasing income disparity and longer life. "Healthspan" must also include mental health. Without sense of belonging, value, a feeling of security in one's future, mental health suffers. Deterioration of mental health manifests as physical health issues. The rate of growth of diagnosis and medical prescription for psychiatric problems is high. What can be done about the terror of aging?
Back to the OP, and to append my original comment, money for research aimed at solving medical conditions causing the greatest reduction in life span is excellent news.