Was there any kind of idea, before October 1, how many (and even whether) insurance companies would be discontinuing certain policies in complete "blanket" sweeps?  There must have been some sense of this, otherwise there wouldn't have been the minimum standards to get rid of the shit contracts that barely cover you if you actually get sick, such as what I had.  But, because I was already 65, this didn't come into play for me. 
I thought that the whole thing was supposed to be one huge pool, not 74,000 different rates per 100,000 insured people?  Or perhaps at least several huge pools, separated by age brackets.
Does that mean that somebody whose cancer is in remission (and whose bill cost the insurance company $122,000) might be paying $44,000 per year?  Somebody else who had a similar experience but had one more day of care and the same insurance company paid $123,000 - will THAT person be paying $44,300 a year?
The junk policies, are they being canceled because of the ACA, or because insurance companies can?
What's going on (or not) in the background is still mysterious to us, even before considering what is or isn't in the new law.