0 out of 7Mike Roemer/Associated PressIt's not always the big-ticket moves that have the greatest impact on the NFL.Take a look at last year when Robert Quinn was made the Chicago Bears' second highest-paid free agent in total dollars. He only managed to score two sacks compared to the 11.5 he had the previous year. Emmanuel Ogbah on the other hand went to Miami for $55 million less in total contract value, and posted nine sacks.Some moves are great (Tom Brady). However, moves that aren't as headline-grabbing and hog the spotlight can still work. Some of the most underrated additions to NFL rosters are due to their good schematics, team fit, value and alignment with team objectives.These are the most important additions to the offseason. They are ranked according to their value and predicted impact.