There seems to be only two options: 1) allow bitcoin complete freedom 2) make it illegal to accept bitcoin as payment. The second option seems more likely at the moment, be the first is still possible
I think that the option 3) is also possible. The bitcoin will stay as a "parallel" currency "as it is" but with the certain regulation/limitation of its use. Like it is already in some countries, where bitcoin payments are acceptabile in parallel with other currencies and is used by the companies with a solid reputation.