Just rereading this one line - again, I'm pretty sure your motives are noble, and perhaps you can move the needle a bit. But... why should employers be demanding positive ROI on something that isn't their core business? "Employers" as a whole, having to learn about various 'insurance' options and dedicated people to help guard their investments in Human Resources - something about this troubles me greatly. It's... as if... unless I'm somehow 'good enough' to warrant the protection/benefit of a 'good employer'... I'm less than worthy of good health, or access to necessary care. And... once that employer has no more use for my services (or someone else can provide them cheaper)... I'm essentially on the scrap heap (someplace we'll all be, metaphorically, at some point, sometimes through no fault of our own).
Again, I wish you the best of luck, but "employer provided health insurance" is just something that really is past its sell-by date, even if you can squeeze out some savings for employers and provide some good for the select few special/lucky enough to be employed by a company so forward-thinking as to engage your services.