Piers, my study of history shows, at least to me, that when the underclass has risen and overthrown the ruling class a new, and often worse, ruling class arises. Just as in "Animal Farm." The American Revolution, the French Revolution, Garibaldi, the rebellions in Japan during the 19th Century, the Irish Rebellion of 1916, the Russian Revolution -- to name but a few -- all eventually substituted one ruling class for another and the change wasn't often for the better.

This is not to say it shouldn't be done, just an observation on what happens.