Plenty of things I was wrong about, let me see if I can remember them all.
I thought Chung would not only not contribute, I thought Kanorris Davis would make the roster over him.
I thought that one of Connolly/Wendell would not make the roster. Figured Connolly was the better player but older with a bigger contract, while Wendell was not as good. Along with that figured Wendell's playing time/2013 snaps would be replaced on the OL by Cannon, with that improving the OL's performance. Also thought Jon Halapio would make the team, and compete for a starter at guard.
As someone mentioned above, I thought Amendola and Edelman's roles/numbers/importance would be reversed. Also thought Dobson's numbers would be about what LaFells's were (74/953/7), while Lafell would be at about 400-500 yards.
I was among those openly questioning the hire of Dave DeGuglielmo. I didn't see anything impressive on his resume at places he had previously coached at, and after four weeks the OL was not performing well at all.
I did predict the Patriots would go 12-4, but admittedly I backed into that one as the Patriots weren't even trying to win yesterday. I did say something to the effect that people who thought the Pats would go 14-2 or better weren't being realistic at all, but in retrospect that could have easily happened.
I also disagreed with someone here about the 49ers. They said the team was old and had peaked, and would slide back to about .500 this year. I thought the Niners had one more good season left in them, and had a good chance of representing the NFC in the Super Bowl. Oops.
On the other hand I was right in regards to those that insisted that the NFC was 'clearly superior to the AFC', and was also correct about the NFC East being highly overrated. I felt Washington and New York would both be very bad and were being over hyped, but also felt Dallas' defense would prevent them from making the playoffs and they'd finish at about 8-8.
I thought it would be the Bears rather than the Lions that would challenge Green Bay in the NFC North. My thinking was that Chicago had a ton of injuries to their defense in 2013, and they would rebound this year with better health. Oops.
I was right and wrong on Carolina. I said there was no way they would have a winning season, and that they would miss the playoffs.
I was right about the AFC South again being the worst division in the NFL, but didn't expect the AFC North to be as good as it was.
I'm sure there are others; it's somewhat humbling to look back and see how wrong one can be even when following the team and the NFL as closely as I do.