Not for nothing but a lot of those Right To Work states have some of the highest percentage rates of welfare recipients or rather they take more Federal entitlement monies than those Union state economies...as well as teen pregnancy rates are higher and they've got a proclivity for having higher high school drop out rates.
Yes they've got lower unemployment rates and they've got a lower cost of living (the dollar has more purchasing power, et cetera) but the poverty rates are higher and the workplace fatalities and injuries are also more prevalent although I digress, it's not that Right to Work states have more or less health insurance it's that the health insurance they do have is sub standard to the point it's just not worth it (which has changed or will be changing with the Affordable Care Act, so it's really not that much of a difference either way).
Either way, Michigan is still home to the UAW, any new auto manufacturing companies or plants moving in will still have to deal with them...in the end not much will change the way business has been done in that state. I would've thought Michigan legislators might've leaned towards employee at will laws instead but then I noticed the lobbyists behind Michigan's recent RTW legislation were ALEC lobbyists...a charade, window dressing, a sham...same shit different day nonsense, not that the unions are any better or worse mind you, there are pros and cons to both RTW and Union State Economies, the trick is to find a happy medium or neutral ground that works for that particular state, region, or local area. If a region or local area is inundated with Chick Fil A homophobic uber Christian fundamentalist right wing neocon teabagger types then by all means, legislate Right to Work laws on their behalf, if the opposite is true, that if a region or local area is chock full of hippies or commie teamsters then let have at it, if collective bargaining and groupthink works for them I don't see what the big deal is, that's their thing.
I foresee a need for both Right to Work states and Union State Economies in the near future anyways so it's a benefit more than it is a disadvantage.