People need to realize and continue to be aware that the value of defenses will vary on scoring and size. I very hard to make them relevant in leagues I run (with mixed success).
In some leagues it makes sense to draft one early. Not 4th or 5th round early, but still.
However, in most 12 man leagues there is enough "supply" relative to the "demand" to make even a 9th or 10th round pick a poor investment.
With that said, in a D-heavy league, after you have taken starters and a backup for QB, every starting RB, and the majoprity of WRs and TEs, if the Jets are on the board, taking them is fine. So in a 1QB, 2RB, 3WR, 1TE league I am saying the 12th or 13th.
What about a 10 team league that starts 1 RB and 2 WR(no TE)1 Flex. The roster requirements are 2 QB's, 3 RB's, 3WR's, 2 K's, 2 D's.
The top D scored 150 points more than the 12th D(and more points than Chris Johnson), the top WR scored less than 100 points than the 24th WR.
You projected the Jets to be far better than the next highest defense in 2010.
Yardage and points weigh far more heavily than normal.(Even if a D doent have a sack, turnover or TD, but only allow 3 points and 240 yards will score as high as the top 5 WR's in any given week.)
Not to mention a D that allows alot of yards and points can loss you enough points to negate a good WR game.