Real autonomy for Xinjiang and how?

Comments on Mike West “Xinjiang riots: A jaundiced hack’s-eye-view of China’s restless Western frontier”, 17/09/2009, http://www.eastasiaforum.org/2009/09/17/xinjiang-riots-a-jaundiced-hacks-eye-view/

It is an interesting to see what real autonomy means and who it can be implemented in Xinjiang without real changes in the country's whole political system.

I don't have information on the ethnic compositions in Xinjiang. But let's consider two scenarios:

1. The Han people are the majority in Xinjiang. Under this scenario, what is likely to be the power composition? Would it satisfy the Uyghur if the Han people have majority in the autonomous government?

2. The Uyghur people are the majority. Under this scenario, the Uyghur people are likely to be in majority in government. Does it want to share power with other minorities, mainly the Hans?

3. What would be the policy in terms of immigration to the region? Should it be restrictive to some ethnic groups, or be open to all Chinese irrespective to their ethnic groups? If restrictive, is that still part of China and why don’t others have the rights to live there?