Maybe you truly believe that Vermont Senator Bernard Sanders's introduction of the new Medicare for All Act is perfectly timed and will generate the popular groundswell necessary to get it passed over the objection of Big Med and Big Pharma. Maybe you also believe that it will become the single "litmus-test" issue for candidates in 2018, especially in Democratic primaries. Maybe you believe neither of those, and that's OK too.
For me, as long as I've been paying attention to the issues, health care reform has taken a reluctant back seat to (1) anti-war/pro-peace, and (2) environmental matters such as climate change. Both (1) and (2) not only deal with the survival of life and civilization on this planet, but are also absurdly multi-faceted and loaded with ramifications. But I have been a proponent of a national single-payer health care system since high school, when the nationwide debate topic of comprehensive medical care.
BIG UPDATE: Within minutes of my publishing this post, the Scott McLarty sent out this GPUS press release on the topic. So as a party, we're officially excited by this development.