The Patriots drafted Aaron Dobson with the likely mindset of him being the guy that takes the top off the defense with speed and free up things underneath for Julian Edelman, Danny Amendola, and others. That plan hasn't quite happened yet, although the Patriots have been able to capture a Lombardi last season without that element. With Dion Lewis shelved for the year and Edelman basically shelved until the playoffs, someone has to step up and it doesn't have to be a Z receiver. Dobson isn't a Z by any means, due to the fact he's only effective on the outside, but Brandon LaFell's positional versatility could allow for the Patriots to play both guys in certain situations.