If they really get a free market system like car insurance, pre-existing condidtions *could* be handled like high-risk drivers. Not apple to apples, but it might offer some flexibility.
Unfortunately, this plan involves deregulation and less gov't control, so they'll never sell it. Also, they're about 6 months late to the party... the dems will eaily prove (word chosen intentionally) that the GOP has no plan based on that alone.
I like the plan as outlined for a number of reasons, one of the biggest being that it's easy to reverse. If it doesn't work, then something else can be developed w/o much push back. Completely opposite to Pelosi's plan.