The Detroit Lions need improved play nearly everywhere across the defense, but no team is going to be successful without an at least competent secondary. As more and more offenses start favoring the passing game, there is a need for at least five reliable defensive backs on any given team.
The Lions are nowhere close to that number right now. There are a ton of candidates to take the step forward and become a long-term starter, but currently the defensive backfield is full of a bunch of question marks and a lot of unmet potential. Some of the development has been stunted by injury, but regardless of how they got here, multiple players are going to need to step up in 2022.