I've been playing the mod now pretty much since the day it came out. It was buggy as hell, honestly I think they should have released it as a Beta-build and gone from there. Probably gotten a lot less hate for the technical problems people were experiencing.
As far as the content? Some of it I did not like, some of it seemed to be missing parts?
For example, you can get a quest from a guy in the NCR camp that asks you to find his old CO in Bright-Town. It was, I thought, an interesting quest, lots of interesting backstory stuff found in the area about the events that happened there. And a bunch of smaller quests also found in the area that just added to the experience. Good stuff. Find the guy, convince him not to commit suicide and to go back to the NCR. All good, cool I thought. Except when I got back to the Fellow who gave me the quest, the options for the dialogue where limited to lying and saying he had killed himself, OR that he had been put in a cell, supposedly by the NCR. Wait, what? When did that happen? Why did it happen? And then I get a pop-up that he "will remember this?" Like, wait, is that good or bad?
Some of the quests had just, really 180 degree ending to them or had me thinking to myself I was doing the entirely wrong thing, but I was literally locked into that course of action by the quest giver. And there was no way to progress but by doing something that, literally, made no sense what-so-ever. Executing someone for eating cereal? WTH? I honestly felt like I was being forced to commit murder because the quest-giver was a total nut-job. Think that was one where I actually re-loaded a previous save and just did not ever complete.
Now, all that being said, I honestly believe that a lot of the criticism towards the mod is, well, stupid to put it bluntly. People harping on the NCR in the game not being lore-friendly, or that the "real" NCR" wouldn't do this and such is a glaring example of what I mean. OK, first off, they are NOT the NCR, that is made VERY clear to you in the opening minutes of the Mod. They are deserters who left the "real" NCR after getting crapped on and lied to by the leadership of the NCR. They where promised they where getting discharged, and then told "Oh the Legion just attacked us, go and die on the dam." So yeah, they left. Followed General Blackthorne into the Frontier to get away from the NCR. This is explained by in-game dialogue, by a (very nicely done) cutscene that you go through, all at the beginning of the mod. And still the People are whining "The authors are wrong." Or that somehow this group of literal deserters, are not enough like what some rando guy on the internet thinks is the "real" NCR. That is because they are NOT the friggin' NCR! Duh!
Or the part about not being able to join the Enclave. Which you have never been able to join in ANY Fallout game. Sure, in FO3 you can go along with Eden's plan and sabotage the water purifier (and genociding everyone in the DC area, just in case you forgot that part.) but it does little to change the outcome. Even if you cooperate with the Enclave and give Autumn the code to the purifier, he kills you. Not what I would call getting recruited. And if you have Broken Steel installed, there is still no way to suddenly decide to wander off to the Enclave base and join them. Feel free to try, they all try to kill you.
Again, the Enclave wants to KILL everyone who is not up to their "purity" standards, to include the entirety of the population in FO2, to the population of the Capitol Wasteland, and every one else for that matter. This is not some kooky thing that the authors of the Frontier came up with just to screw with Enclave fan-boys, this is actual game lore from, not one, but two Fallout games. So yeah, outside of mods you would never have this option. It is made abundantly clear through two games that the only people that the Enclave wants to keep alive, or has any right to BE alive, is themselves. Even your character in FO3, despite being raised in a vault, is not "pure enough" for them. And they keep trying to kill you through the entire game. Great recruitment policy they have going there.
But somehow saying "Well, I have such and such a mod installed, that means you must re-write the lore of the game to cater to my whim" is just, the height of arrogant stupidity. Fine, you want to see it, go write, code, troubleshoot, and make your own damn mod. And, btw, you will still get some entitled A&^hole, just like yourself, whining about how your mod is crap, because it doesn't fit with their ever so important view of their head-canon of what Fallout should be. You really should have submitted it to them before hand to get their approval after all.