The “13″ formation is a jumbo set that screams run. One running back, 1 wide receiver and 3 tight ends usually means run. It is most often used on the goal line or late in games to run out the clock. With the addition of Jace Amaro, Eric Decker and Chris Johnson it doesn’t have to be used in that fashion. If the Jets use Zach Sudfeld as the 3rd tight end then there are 5 legitimate receiving options in the lineup. Throwing out of this formation successfully a few times will get defenses to back out of stacking the box to stop the run and help the running game. Even if they brought a lineman eligible as the 3rd tight end to be an extra blocker they still have 4 receiving targets that could get separation quickly with beneficial match ups.
There are also some very interesting things you can do with 2 running back sets that feature both Johnson and Ivory. For one, you can run the option out of this with Ivory up the middle and Johnson the pitch option for Smith. For another, you can run screen passes and fake screen pass draws that defenses would bite on considering you have an actual speed threat in Johnson to make them adjust. There is potential for trick plays such as reverses and flea flickers due to the varying options all over the field. 2 tight ends, 2 running backs and Decker at wide receiver has all types of possibilities such as a fake screen to Johnson thrown back to Amaro on a TE screen or even line the unit up in a 5 wide spread formation to get mismatches out wide. You could even run a QB draw from that set with the defense so spread out.
This is the difference in having upgraded skill position players who have shown the ability to get open. There are many more options for Marty Mornhinweg to use and he can be more creative as well. Decker and Johnson together averaged over 120 receptions the last couple of years, Amaro had 108 in college and Saunders averaged over 60 receptions at Oklahoma, including torching Alabama for 75 yards and 2 touchdowns in the Sugar Bowl.
This is just a sampling of what the offense has the capability to do. I realize that this offense isn’t perfect and is not going to morph into the ’98 Vikings or the ’07 Patriots. However, it is clear that the Jets do have more playmakers than last year and should be a better offensive team this year.