What aspect of the Detroit Tigers' management strategy is highlighted in the text?

The focus on signing free agents to improve the team reflects a strategic approach to enhance performance by acquiring players who have proven skills and experience from other teams. This tactic is often employed in professional sports as a way to fill gaps in the team's roster, address weaknesses, or bolster strengths without relying solely on the draft or player development. By bringing in established talent via free agency, a team can quickly increase its competitiveness and potentially improve its chances of success in the league.

The other options, while relevant to sports management, do not directly indicate a strategy aimed at immediate improvement through external talent acquisition. Hiring local players emphasizes community ties and fan support, building a new stadium pertains to long-term infrastructure and fan engagement considerations, and replacing the coaching staff involves internal changes rather than enhancing player capabilities through experienced external additions.