Probably the biggest thing is how many formations and adjustments they can run out of it, which comes back to the versatility and unique skills of the top two tight ends, Gronkowski and Hernandez. They could be empty in the package, with both tight ends split out wide, or more tightly compact in a traditional look with both tight ends aligned next to the tackles. Sometimes they play up-tempo with it. Other times they slow it down. So there are really so many things you can do out of the package, which again is tied to the uniqueness of Gronkowski and Hernandez. When one of those players has been injured, the package isn’t as dynamic, and at times in those situations, the Patriots will use a third receiver over a second tight end.