to get the jets to the next level within the next 2-3 years:
1) sanchez must improve, which we all know is obvious;
2) the jets need a better pass rush. whether that comes from the linebackers or defensive ends, that's rex's/tanny's decision on draft day.
3) the jets need another weapon in the passing game.
in terms of last year, the guy on the jets roster who would have helped against the dolphins, colts and patriots was leon. the first answer many will give is that the jets need another cb to cover the welkers, and i don't disagree.
however, sometimes the other team's offense is going to score no matter what. that's what can happen when you play against hall of fame qbs. and in those games the best way to counter that is to have an equally explosive offense. a guy like tate or damien williams would really open up the offense, as well as having leon back (or someone like him, should he get traded).