A restart would not result in a more equal distribution of wealth. We would see the same approximate Pareto distribution.
Except that this time, the richest bitcoiners would not be geeky early adopters but City Boys from Wall Street and Canary Wharf who can afford to lose $1 M on a high risk investment.
What difference does it make?
I agree. Restarting the block chain wouldn't help with distribution (if that is even a problem). Assuming not many people left, the difficulty would start up at the same rate as now. 7200 coins made a day, and a majority to the people that have sunk a lot of money into mining. In a year, some people will still have a huge share.