For most RSO formats, the fantasy effect is modest. Punt-return yards count only in leagues that award them, and Kennedy has not been promised a regular offensive workload. Managers in return-yard or very deep leagues should check their scoring before acting. Everyone else can use the move as a reminder that special-teams assignments often decide the final active receivers.
Personnel can still change before kickoff, and the first game will reveal whether Kennedy handles every punt or shares the job. It will also show whether he receives any offensive snaps. Clean decisions and positive returns would strengthen his weekly place. A narrow return-only assignment would keep him valuable to Detroit without creating conventional fantasy volume.
Kennedy's path from release to practice squad to the Week 1 return plan shows why the bottom of a roster remains fluid. Detroit returned to a familiar receiver because it had a specific specialist job to fill.