Apart from this, I agree with most everything you write. New Vegas is undoubtedly closer in spirit to the original games and it is quite evident that those who entered the series with the first two find it to be a return to form. However -- and this is sadly where we are doomed to disagree -- I am still of the opinion that, for better or worse, "Fallout" is anything that bears that label, that "Fallout" encompasses Tactics and BoS and Fallout 3 and should Bethesda or Obsidian decide tomorrow to release a platform game featuring a Super Mutant jumping over the rooftops of a ruined DC then this would be "Fallout" too.
I have to agree and disagree with you here.
Take the Alien franchise as an example. Alien, Aliens, Alien 3 and Alien Ressurrection
Every one has a diffferent director, all have a very different feel to them. Some are 'better' than others, yet they're all unmistakingly Alien movies.
Alien 3 has a lot more in common with the original than it does with Aliens, but I think it's going to be difficult to find many people who think it is better than Aliens.
That being said, here is where I disagree,
Alien Vs Predator *shivers*