The ingredients are all still there. Will Farrell, Steve Carell, Paul Rudd, and David Koechner. Get these guys in a room and who knows what'll happen. No script? No problem. Sprinkle in a few heavy hitters and you've somehow got a full length feature. How does it happen? I don't even think they know.
...Well clearly they know. I mean, it did slow down in the middle to try and make way for plot, but these films are one of the very rare exceptions to the plot rule. Essentially, I'm saying, I don't think the plot was completely necessary and as silly as the blindness sequence was, it felt like it lived outside of the movie in many ways.
But the honest to goodness truth is, this one had to be so much bigger than the original to really make the fans happy. And in one pivotal scene it did.
It was fun to watch them take that rumble sequence so much farther than the original ever could have. And by the time the movie ended I knew it was at the very least a worthy successor. After all, the first Anchorman had its awkward slow moments. So the same rules applied.