Good eye Adam,
A lot of people are interested in Singapore's system, which marries some liberal concepts with conservative ones. I too love the idea of mandatory HSA's but you've seen how hard conservatives have fought against mandating people be personally accountable by requiring everyone get insurance. Can you fathom how hard the GOP would fight against mandating a percentage of our income go to HSA's?! I just don't know how politically viable that is, even though I agree that its a smart concept.
The other key thing about Singapore is that its not the melting pot America is, has a fraction of our population, and doesn't have nearly the chronic disease/obesity issues we have. So it would be MUCH more costly for us than it is for them. The reason that is important is that the Singapore government has a massive slush fund they draw from when their citizens have exorbitant healthcare costs that they cannot pay. Singapore has been able to afford this but there is no way in hell we ever could.
This article from Vox earlier this year does a fantastic job of outlining their system in more depth. I think you'd really enjoy it Adam.
There are definitely some things we could learn from their system though, really from most other systems.