Fallout 3 got too easy in the later levels. I didn't like the harder difficulties because all it did was give enemies more health. I hope this will even that out.
I thought Fallout 3 was a great game. Mind you I never did play the first 2...
My only major problem with it was how much health everything had. If i shoot something in the head with a sniper rifle it should die in one shot. Not 5-10.