NFL: What will be the next trend or big thing in the NFL?

[cnasty]

I think the running back by committee will become the norm. You can have a bruiser for the goal line, a between the tackles/2-down RB and a receiving RB all in one back field. It's rare that you have that workhorse back that every single team used to have, back in the "day". I also agree with the previous comment of the new breed of LB and Safety. I could also see more 3WR 1RB 1TE base offensive sets as the league becomes even more pass oriented.