I like the NCR because they have the grit to survive. corrupt politicians for sure, and inefficiency, but they are still there. The whole political system may suck, but the grit of the soldiers in the NCR keep them there. Legion seems promising on paper and statistically. They have better economy and security in other lands, but just like the Romans they emulate, they will be very successful for a while, but crumble quickly. the Romans were strong as hell for centuries but crumbled in about a generation. They are also pretty mean to anyone not Legion, and condemn them as well. House is an autocrat who wants money. Sure he can promise wealth and security, and maintain it, but hes greedy and doesnt care about the people raking in his money. That will come back to him eventually. I would totally do Yes Mans at least once if I could keep the NCR in the Mojave. Id keep Vegas to the Securitrons and Yes Man, but NCR everywhere else. NCR seems to actually have a chance, especially if they tried to separate from the Hub or fixed their issues. The military of the NCR alone is actually pretty effective when they go after something. They could really get a handle on the Mojave if they coagulated a strong enough force. NCR has a lot of issues, alot of them related to ones we have today. leadership is key to success, and they dont have much of it. The system by design works well, its the people running it that drive it down. Even with all the corruption and inefficiency, they are still present and a formidable force, and that tells me that if they were clean(or at least for the most part0 they could dominate the region. my .02$