Ilosar
Vault Fossil

Obsidian pushes this angle a lot to but the argument makes no sense, the Legion and House have inherent problems as organizations, NCR doesn't, if you remove the Legion you alleviate all the pressure on NCR that keeps it from their oft-critized failings (being overstretched, not guarding trade routes)
This, so much. People seem to forget NCR is fighting a war against a nation at least as big as itself, far away from home at that. Of course there's going to be loads of logistical problems, even moreso if one of your supply routes gets friggin nuked. Yet somehow this makes the very existence of the Republic bad, they are all corrupt and inefficient and imperialistic (despite, you know, protecting Vegas from an army of slavers, led by sociopaths and a megalomaniac, and still getting shit from the locals for it). Hell, many of the projects giving a better life to people in Vegas (the water pipes, merchants, communal farms) were introduced by NCR. Even in a relatively tricky position, they still manage to get things done. There are corrupt individuals, of course, such as Contreras and Alice McLafferty, and obvious problems are led to rest, such as the Powder Gangers and the Deathclaws on the High 15, but that's just comes with the dire situation they are in. The sole reason the Legion doesn't have such problems is that we don't see any of their territory.
What also angers me a bit is how their leadership was conceived. Sawyer pretty much stated Oliver is a patchwork of cliche American gung-ho generals, such as Patton (as if his outfit and attitude weren't enough), without any of the skill they had. He pretty much exists to partly justify an army with guns losing to slaves with machetes. He is a caricature. I expected more from Obsidian.
The NCR isn't in control, and what's more it's made painfully clear that all roads pass through Vegas. Should NCR leave, New Vegas is suddenly left with everyone whose made a home there as well as anyone who wishes to continue trading north and east.
Too bad the people in the East are murderous assholes who hate House if he wins and don't want to trade anyway, and that the people in the North have been massacred at the orders of said assholes in the East. People don't make a home in New Vegas, they come either because the army needs them or to experience the Strip. Both will leave if House wins, either the army is driven off or it no longer patrols the routes the second group uses to actually go to New Vegas.
Whether house deserves to be put out of play is irrelevant. Whether they're able to remove him is what matters. And again for however much of that falls on contrivances of the writers, that seems contingent on the courier. House isn't a parasite - he knows what he has and he knows how much both sides want it. He's willing to play them off one another until neither side is left strong enough to oppose him. How difficult is that to comprehend?
I perfectly understood he is an egoistical ass who puts his own interests before those of the people living in his own city, thank you. And his brilliant plan doesn't work great, because all he does is weaken NCR while the Legion grows stronger. Had he not found his precious Chip, the War could have either dragged down for a long time, or ended in Legion victory, which is kinda bad for him and New Vegas.
The restrictive treaty he put the NCR under was with the understanding that NCR would never have signed it were they not under duress. Have we played the same game here? NCR doesn't keep alliances any better than Caesar's Legion- that is to say it takes what it wants, and breaks treaties, promises, and simply subsumes those cultures it meets when it feels it's advantageous. The NCR is a heavy-handed(somewhat slanted) allegory to the United States' and its policies of colonialism throughout the latter half of the nineteenth century and beyond. It's kinder on the face but at heart no less ruthless than the Legion or any other expansive power.
And yet, I just gave 4 examples of factions aiding NCR and not being backstabbed afterwards. I could also say that towns like Primm and Goodsprings prosper under NCR rule. For all that talk about how expansionist they are (by the way, I never heard of American colonialists building facilities for the Natives while leaving them well enough alone AND fighting off a faction wanting to enslave them), they sure seem to tolerate other powers if said powers don't start screwing over them beforehand. And then they complain when the Bear bites back. Compare with the Legion, which at best enslaves ''most'' of the Mojave, razes towns like Primm and Novac, and brutally assimilates it's allies (or tries to, at any rate, go Boomers).