NFL Whip Around: What's the next big trend we will see in the NFL?

The NFL calendar is slowly turning away from offseason workouts into one of the few lulls on their calendar. Between those workouts and training camp it is a perfect time to evaluate the league on multiple fronts. What's the next big schematic trend in the NFL? Where will the big name free agents on the open market land? Is a player really worth half a billion dollars?