Let me ask you this: If you had a team of five would you rather have 20% annual gain without adding another developer, or go hire and integrate a new developer every year to get a 20% productivity gain YoY?
If it was up to me, I’d go with option one and make sure that I invest in ScrumMasters. Too often I see the ScrumMaster role diminished and undervalued in organizations. Many leaders believe that the ScrumMaster role is part-time (can be combined with another role such as manager) or that one ScrumMaster can cover five teams. Perhaps it’s because of the wrong ways the role is implemented that’s causing confusion and bad decision-making around staffing the team.