I quite like the idea of the Sith doing this dance of death with each other (it's one of the few prequel ideas I liked).
The apprentice always seeking a chance to overthrow his master with the aid of a young apprentice and the master always trying to hold onto power via the same mechanism makes for a very delicately balanced relationship which could go one for a very long time.
It would have been very easy for Lucas to have just match thousands of Jedi against thousands of Sith but he (un-characteristically) pulled back from that, and a lot of fan expectations to give us something more subtle and diplomatically elegant.
That and using a fake war working from both sides to weaken the Republic and give rise to the Empire were far too intelligent to be in the movies we actually got.
And the good thing about Ady's reworked dialogue is that it doesn't beat the audience over the head with that subtle concept.
The DVD version is like a comedian working out the most clever joke in the world only to spend several minutes explaining the punchline and destroying the impact.