In Agile, one of the key principles is to provide continuous feedback and integration throughout the development process, ensuring that components are tested, integrated, and iterated upon regularly. By separating the work into three teams that work independently and only integrate at the end, the strategy risks delaying feedback and potentially causing integration problems. This approach could lead to significant issues when the components are eventually integrated, as they may not work together as expected due to lack of ongoing collaboration and integration. Therefore, working in parallel with proper continuous feedback and integration is crucial in Agile to minimize risks and ensure smooth delivery.

To improve the team's productivity, it is essential to keep both the product backlog and the iteration backlog up to date. The product backlog contains the overall product features and requirements, while the iteration backlog focuses on the work planned for the current iteration. Ensuring that both backlogs are updated as issues and new tasks arise will help maintain clarity and avoid confusion, enabling the team to prioritize and track progress more effectively. This will also help minimize delays and rework, as the team will have a clear, accurate view of what needs to be done and what has been accomplished.