#5 Who shows up on the wide reciever depth chart
The Las Vegas Raiders had a lot of problems with moving the ball last year, meaning it was something they would definitely have to work on during the offseason. Fortunately for the Raiders, they acquired Kenyan Drake and other powerhouses, giving them more options to play with.
As for the tight end position, the organization has bright spots like Darren Wallner and Foster Moreau, who could both end up making an impact if quarterback Derek Carr manages to stay consistent. Whether all this results in a better season or not remains to be seen.