What development methods not mentioned in this case could also help prepare consultants for a larger leadership role in the organization?

A key stakeholder group for any organization is its employees, and technology consulting firm West Monroe Partners is highly committed to that area of social responsibility.
The organization was founded on the four partners' vision for an ideal consulting firm, with values such as diversity of thought, quality over growth, and practical innovation. Treating employees well is also practical. Technology strategy is a valuable skill set; furthermore, the employees in West Monroe's 10 offices share in the ownership of the firm. Therefore, says Chief People Officer Susan Stelter, the company is committed to the idea that employees "have to be engaged in work, cultivate meaningful relationships here, and believe that we are an organization that will challenge them to learn and grow."
Maintaining such a culture requires a strong program for employee development. The foundation of development at West Monroe is what the firm calls the Three Year Letter, and it starts with the employee. Each West Monroe employee writes a description of what he or she hopes to accomplish over the three years ahead. Then the employee and his or her manager meet to discuss the employee's goals and how the manager can support the employee in realizing them-even if they include leaving the firm in the long run.