Ironically the best option for the people of Vegas is a stable benevelont dictatorship. Either house+courier (the house always wins) or the courier + yesman (no gods no kings no masters). Definitely not Kaisar and his faulty understanding of helgen dialectics. However, you can still make a strong case that the NCR can be reformed if you take the correct actions as The courier. Let Kimball eat it and force everyone else to play nice. The game shows that while many are corrupt, there are still several people in the NCR who uphold their values.